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Redoubt

A redoubt is a small, usually temporary enclosed defensive work or , often constructed from earthworks, designed to protect soldiers positioned outside a larger main defensive line or to serve as a secure during . The term is also used for larger strategic defensive areas known as national redoubts. The term derives from the Latin reducere, meaning "to lead back" or "to withdraw," which evolved through reductus (a refuge) and 17th-century redoute to describe a place of and protection in . Redoubts emerged prominently in European warfare during the , particularly as advancements in necessitated additional outer defenses to shield primary fortifications from . They typically consist of a surrounded by a raised earthen wall or , sometimes reinforced with wooden stakes () or stone, and could include bastions for enfilading fire to cover approaches. In construction, soldiers would dig a perimeter and pile the excavated soil to form the walls, allowing for rapid erection—often in a single day—making them ideal for field armies with limited engineering resources. Historically, redoubts played a crucial role in major conflicts, serving as strongpoints in sieges and battles. During the , they formed the backbone of defenses due to the rebels' scarcity of heavy and permanent forts, with examples including the earthworks at (such as Redoubt 3, a reconstructed site from the 1777-1778 encampment) and the critical assaults on British-held redoubts at Yorktown in 1781, which helped secure American victory. Later, in the , redoubts like the Great Redoubt at Borodino (1812) exemplified their use as anchored positions in large-scale engagements, often garrisoned by and to anchor defensive lines. Their emphasized simplicity and adaptability, influencing tactics into the .

Definition and Terminology

Definition

A redoubt is an enclosed defensive , usually temporary or supplementary to a main fortress or defensive line, designed to provide a secure platform for and to repel attacks from any direction. These structures are typically constructed outside primary fortifications to extend defensive coverage, offering a self-contained position that can hold out independently if isolated. Their primary function is to deny the enemy key terrain, such as hilltops or river crossings, while allowing defenders to maintain fire superiority. Key characteristics of a redoubt include its fully enclosed design, often in a polygonal or circular to minimize dead angles and facilitate all-around . Construction materials vary by availability and permanence needs, commonly featuring earthworks for rapid erection, reinforced with palisades of sharpened wooden stakes or, in more durable cases, stone walls. The layout emphasizes enfilade fire—gunfire raking along the length of approaching enemy lines—and robust protection against direct assaults, with features like surrounding ditches or to impede advances. This configuration ensures the redoubt serves as a capable of withstanding prolonged engagements without reliance on external support. A redoubt is distinguished from similar fortifications by its independent, enclosed nature: unlike a , which forms a projecting element integrated into the larger walls of a fort to provide flanking , or a , an open-backed V-shaped fieldwork vulnerable from the rear, a redoubt is a complete, standalone . In strategic contexts, the term may also denote broader applications, but its core military meaning remains tied to these tactical enclosures.

Etymology

The term "redoubt" derives from the "redoute," a 17th-century word denoting a place of retreat, which itself stems from the "ridotta" or earlier "ridotto," meaning a or refuge . This form originates from "reductus," signifying a or concealed place, ultimately tracing back to the Latin "reducere," composed of "re-" (back) and "ducere" (to lead), thus meaning "to lead back" or "to withdraw." The word entered English around 1600 through military texts, initially carrying the sense of a secure haven or place of retreat, reflecting its roots in tactical withdrawal. By the , its usage had shifted to emphasize a fortified defensive enclosure, aligning with evolving practices in European warfare. This etymology connects to the Old French verb "reduire," meaning to reduce, withdraw, or bring back, which shares the same Latin source and underscores the strategic notion of falling back to a defensible position. Early English applications, such as in descriptions of conflicts like the , illustrate this transition from a general refuge to a specific structure.

Design and Features

Basic Structure

A redoubt typically consists of an enclosed fortification in circular, square, or polygonal forms, designed for all-around defense without re-entering angles. These structures generally feature a perimeter of 50-200 meters, allowing accommodation for a small garrison and artillery, with ramparts rising 1.2–3 meters (4–10 feet) high to provide elevated firing positions. The layout emphasizes simplicity to enable rapid erection, often adapting to the local terrain such as hills for additional height and natural cover. Core components include a central terreplein or platform for mounting cannons, surrounded by parapets that serve as protective breastworks, typically 1.2-3 meters high and 0.6-5.5 meters wide at the top. A surrounding or , excavated to depths of 1.8-3.7 meters and widths of 6 meters or more, supplies earth for the ramparts while creating an obstacle for attackers. Embrasures—narrow openings in the parapets—facilitate fire, positioned 0.9-1.2 meters above the ground to balance protection and visibility. Banquettes, elevated steps behind the parapets, allow to fire over the top without exposing themselves fully. Construction prioritizes speed and available resources, with temporary redoubts built primarily from earth and timber, such as fascines or gabions to revet the walls and prevent collapse. Earth is dug from the ditch, piled and tamped into ramparts, often sodded for stability, enabling completion by a small force in hours or days. Permanent versions employ stone or for durability, though the core principle remains earthen simplicity integrated with the site's natural features to enhance defensive tactics like enfilading fire.

Defensive Elements

Redoubts were equipped to support both and fire, enabling effective enfilading and direct against approaching forces. Typically, these fortifications accommodated 4 to 20 artillery pieces, depending on size and strategic role, with embrasures or platforms designed for cannons to deliver along the perimeter. For instance, embrasures measured about 6 paces wide for field pieces and 8 paces for heavier 12-pounders, often built on timber platforms to facilitate loading and firing. support came through loopholes integrated into the parapets, allowing soldiers to fire while protected by 2-3 foot thick earthworks resistant to small-arms fire. These armaments emphasized coverage, with platforms positioned to sweep the and ditches. Protection mechanisms enhanced the redoubt's ability to repel assaults by channeling attackers into kill zones and hindering close approaches. Banquettes, raised earthen steps 4 to 4.5 feet below the parapet crest, provided stable firing platforms for standing defenders, optimizing and elevation. A —a gently sloping mound extending beyond the —deflected incoming projectiles and exposed advancing to enfilade fire from multiple angles. , constructed from felled trees with sharpened branches fanned outward toward the enemy, formed impenetrable obstacles in front of the , slowing charges and funneling troops into prepared fields of fire. Additional barriers like palisades (vertical stakes 7-10 feet high) and fraises (horizontal timbers) resisted scaling attempts, while deep (6-12 feet) and revetted walls countered by forcing attackers to expose themselves during excavation. Despite these features, redoubts had inherent vulnerabilities that could compromise their defense if not integrated into broader lines. Isolation from supporting positions left them exposed to prolonged artillery bombardment, as their earthen offered limited resistance to concentrated siege guns. To sustain operations, a typical ranged from 50 to 300 troops, scaled to the redoubt's dimensions and threat level, with smaller detachments handling duties and larger ones managing artillery crews. For example, some redoubts held about 120 infantrymen, sufficient for all-around defense but vulnerable if outnumbered or surprised. Effective counters included mutual support from adjacent works and rapid reinforcement to offset these risks.

Historical Origins and Development

Ancient and Medieval Periods

The precursors to redoubts emerged in through temporary fortifications designed for rapid defense during campaigns. In , during the Siege of in 429 BCE, the Plataeans, allied with , constructed a crescent-shaped and wooden wall inside the city's existing defenses as a fallback position to counter Spartan siege works, allowing defenders to maintain resistance even if the outer wall fell. This structure functioned similarly to a redoubt by providing a compact, elevated defensive enclave that could withstand assaults and enable flanking fire. Similarly, outposts often featured earthen ramparts and palisades to secure strategic points. Roman military engineering further refined these concepts with castra, temporary marching camps fortified by earthworks, ditches, and wooden stakes, built nightly during expeditions to protect legions from surprise attacks. These castra typically included a surrounding vallum (earthen bank) and fossa (ditch), forming a standardized rectangular enclosure that could house thousands, demonstrating an early emphasis on modular, defensible positions adaptable to terrain. Such designs prioritized speed—legions could complete a basic camp in hours—while offering layered defenses that prefigured later redoubt principles. In the medieval period, these ideas evolved into more permanent siege fortifications, particularly in where wooden enclosures served as outer defenses. Motte-and-bailey castles, widespread from the , incorporated a as an enclosed surrounded by a and ditch, acting as an initial barrier during assaults and housing support structures for prolonged engagements. This outer work allowed defenders to control approaches and launch counterattacks, much like an embryonic redoubt integrated into larger systems. During the in the 12th century, field fortifications took the form of temporary concentric enclosures built around camps or outposts, featuring earthen banks reinforced with timber to withstand raids and sieges. The Reconquista in Iberia provides notable 12th-century examples, where Christian forces erected field earthworks and stockades during advances against Almohad positions. These structures, often combining wood and local stone, enabled mobile warfare in contested frontiers, emphasizing containment over permanence. By the 12th century, such fortifications were integral to Crusader and Reconquista tactics, blending ancient camp designs with emerging feudal needs. By the 14th century, the introduction of gunpowder weapons prompted a critical transition in fortification design, shifting from primarily wooden stockades to stone-reinforced earthworks that could absorb artillery impacts. Early cannons rendered high stone walls vulnerable, leading engineers to favor low, sloped earthen ramparts buttressed with masonry, as evidenced in Italian city-states where bombproof bastions began appearing around 1350 to deflect cannonballs. This evolution marked the bridge to early modern redoubts, prioritizing resilience against explosive siege tactics over vertical intimidation.

Early Modern Period

The marked a significant evolution in redoubt design, driven by the widespread adoption of and the development of trace italienne fortifications, also known as or star forts. Emerging in the in response to fire, redoubts were increasingly integrated as detached outworks within these polygonal star forts to extend defensive lines and cover vulnerable approaches. Structures such as ravelins—triangular earthworks projecting forward from the main walls—served as early forms of redoubts, providing enfilading fire and disrupting enemy advances while allowing for mutual support between . This integration transformed redoubts from simple medieval enclosures into geometrically precise elements that minimized dead angles and absorbed impacts through low, sloped earth ramparts. Military engineers played a pivotal role in formalizing these innovations through theoretical treatises. Jean Errard de , a key figure under King Henry IV of France, published La fortification reduicte en art et demonstree in 1604, the first comprehensive French work on s, which emphasized mathematical to design bastioned systems including detached redoubts. Errard's approach bridged influences with practical French applications, advocating for precise angular layouts to optimize defensive firepower and influencing subsequent engineers across . In the late , Sébastien Le Prestre de Vauban refined redoubt designs as part of his systematic fortification reforms for Louis XIV's France. Vauban's "First System" incorporated angular s into redoubts to enhance flanking fire and resilience against sieges, as seen in his 1692 redesign of Fort Barraux, where he added a dedicated South redoubt with sharpened bastion edges and deepened ditches for better artillery placement. These features made redoubts more mobile and adaptable, often constructed as temporary earthworks to support permanent trace italienne structures. Tactically, redoubts during this era emphasized mobility for field armies and coverage of siege approaches, particularly evident in the (1618–1648). Manuals from the period, such as those by Johann von Felden (1643, 1648), described redoubts as versatile field fortifications built by soldiers using standardized tools for earthworks or palisades, typically 7.5 to 56 meters in diameter depending on terrain and urgency. They protected flanks, secured supply lines, and delayed attackers in prolonged s, allowing armies to maintain operational flexibility amid the war's devastating campaigns across .

Notable Historical Redoubts

English Civil War

During the (1642–1651), redoubts served as critical temporary fortifications, rapidly constructed by both and forces to secure positions amid frequent sieges and skirmishes. These structures were typically built from earth and turf due to the urgency of the conflict, often involving local civilians, including women, in their erection to bolster defenses around towns, houses, and strategic points. Influenced by trace italienne principles, they featured ramparts, ditches, and sometimes timber reinforcements like gabions, allowing hasty adaptation to terrain while providing protection against and assaults. A prominent example occurred during of in 1644, where Parliamentarian defenders under constructed earth and turf forts on the landward approaches to the town, including blockhouses reinforced with timber and stone, supported by ditches. These redoubts repelled Prince Maurice's Royalist army of approximately 3,000–4,000 troops over about two months from April to June, resulting in heavy Royalist losses with minimal Parliamentarian casualties. At , a stronghold in , extensive outer earthworks enclosed the site, forming a defensive perimeter that integrated with the existing palace and Norman-era ditches to withstand multiple sieges from 1642 to 1645. These turf and earth defenses, augmented during the conflict, repelled initial Parliamentarian assaults in 1643 and 1644, including Sir William Waller's force of 7,000, by providing elevated positions for artillery and anchoring lines against foraging parties, though they ultimately fell to Oliver Cromwell's heavy bombardment in October 1645. Redoubts significantly impacted the war by enabling smaller garrisons to prolong engagements against larger opponents, as seen in the (September 1643), where earthen fortifications and fieldworks around key positions like contributed to a tactical stalemate between the Royalist army under King Charles I and Parliament's forces led by the , delaying advances and forcing both sides into extended maneuvers.

Great Siege of Malta

During the in 1565, the Knights Hospitaller employed a network of redoubts, ravelins, and temporary earthworks to safeguard the landward approaches to the key fortified towns of and , which anchored the island's primary defenses against the invasion. These structures were critical in extending the five-month resistance against a vastly superior force of approximately 30,000 troops, as the Knights and their Maltese allies focused on denying the attackers a foothold on the vulnerable inland sides of the peninsulas. By fortifying these approaches, the defenders prevented the Ottomans from encircling and isolating the harbors, thereby maintaining supply lines and communication between the strongholds. The construction of these landward defenses involved hasty but effective use of local materials, including earth, stones from demolished buildings, and wooden elements to create and secondary ramparts. In , a built in 1560 from earth and stones protected against from the nearby Santa Margherita Heights, while additional inner lines were improvised during the siege by piling stones into behind breached outer bastions. Senglea's unfinished ramparts were bolstered with a counterguard, , and an innovative wooden structure known as the porporella, a specialized platform extending over the that allowed enfilade on advancing enemies. These works were equipped with platforms to maximize defensive firepower, and were manned by around 700 and supporting , who rotated shifts to sustain the grueling defense amid constant bombardment and assaults. Italian engineers among the Knights contributed expertise in these rapid adaptations, enabling the structures to withstand intense Ottoman and infantry attacks. Ottoman forces, under and Pasha, launched repeated assaults on these landward positions following the fall of Fort in late June, targeting and with massed infantry charges and mining operations in July and August. The redoubts and earthworks repelled multiple waves, including a major assault on on August 20 where defenders used boiling oil and grenades from the elevated platforms to inflict heavy casualties. These defenses held firm despite breaches in outer walls, forcing the Ottomans to commit thousands of troops without decisive gains and suffering attrition from and counterattacks. The resilience of these redoubts ultimately delayed the Ottoman advance long enough for a relief force of 8,000 troops to arrive on , compelling the invaders to withdraw on September 11 after losing over 25,000 men. This victory preserved Hospitaller control of , thwarting Ottoman dominance in the central Mediterranean and shifting the strategic balance toward Christian powers, as evidenced by the subsequent victory at Lepanto in 1571. The siege's outcome underscored the efficacy of integrated field fortifications in prolonged island defense, influencing European against amphibious threats.

American Revolutionary War

During the (1775–1783), both and Continental forces employed redoubts as hasty field fortifications to address vulnerabilities in open terrain and rapid maneuvers, serving as enclosed earthworks that could be constructed quickly with limited resources. These structures were particularly vital for the Continental Army, which often lacked the engineering expertise and materials for more elaborate defenses, allowing them to fortify key positions against superior numbers. The 1778 alliance with introduced significant engineering influences, as French officers like Louis Duportail, appointed as the Continental Army's chief engineer, brought advanced and techniques that enhanced the design and placement of redoubts. A prominent early example occurred at the on June 17, 1775, where American forces under Colonel hastily erected a square redoubt on Breed's Hill overnight, using entrenchments and breastworks to protect and from British assaults. This enclosed , approximately 6 feet high with earthen walls, repelled two British attacks despite heavy , demonstrating the redoubt's effectiveness in channeling enemy advances and buying time for reinforcements. Similarly, during the Siege of Yorktown in October 1781, British commander Charles Cornwallis positioned a series of redoubts, including Nos. 9 and 10, as outer defenses around his entrenched camp to safeguard batteries and supply points against the combined Franco-American forces. These works featured palisades and fraises to deter charges, but assaults led by and the Vicomte de Vioménil on October 14 captured them, breaching the British lines and hastening surrender. Adaptations to the North American landscape marked key innovations in redoubt construction, with log revetments and —barriers of felled trees with sharpened branches—proving essential in wooded terrain to impede and while leveraging natural cover for concealment. These methods, influenced briefly by early modern European engineers like Vauban, allowed for rapid assembly using local timber, often completing a basic redoubt in hours. In , particularly in the southern theater, redoubts played a defensive role by securing British supply lines and outposts against partisan raids by figures like , whose exploited the fortifications' isolation to stretch enemy and morale.

Battle of Borodino

In the , redoubts were used as anchored positions in large-scale battles. A notable example is the Great Redoubt, also known as the Raevsky Redoubt, at the on September 7, 1812. This central earthwork , constructed by the Russian army under , was equipped with and held by to control the main approaches. It became the focal point of intense French assaults led by , changing hands multiple times and suffering heavy casualties on both sides, ultimately contributing to the battle's bloody stalemate that weakened the .

National Redoubt

Concept

A national redoubt represents a strategic fallback position in , serving as a fortified rear area or "last stand" zone to which a nation's armed forces retreat after the collapse of primary frontline defenses. This approach utilizes advantageous terrain, such as mountains or , to enhance defensive capabilities and enable sustained against superior invading forces. In contrast to forward defense strategies that seek to hold an entire through dispersed lines, the national redoubt concentrates military assets in a compact, heavily fortified enclave, prioritizing over expansive control to delay the enemy and create opportunities for external intervention or diplomatic resolution. The concept emerged in the mid-19th century, particularly with 's development of the National Redoubt following in 1830, amid European fears of and advancements in that challenged traditional defenses. Building on smaller tactical redoubts from earlier warfare, military thinkers scaled these designs to regional levels, creating self-sufficient positions with pre-positioned supplies to support prolonged resistance.) Key tactical principles of the include the integration of layered fortifications—comprising outer fieldworks, intermediate bastions, and inner core strongpoints—to create depth and absorb assaults in phases. Natural barriers are exploited to channel attackers into kill zones, while internal mobility networks allow for rapid and counterattacks within the perimeter. The overarching goal is to exact a prohibitive toll on invaders through extended , compelling them to negotiate terms rather than commit to a costly final , thereby preserving national even in defeat.

Key Examples

The Swiss National Redoubt, known as the Réduit National, emerged as a cornerstone of Switzerland's defense strategy in the late 19th and early 20th centuries, with initial alpine fortifications constructed starting in the 1880s to leverage the country's mountainous terrain against potential invaders. This approach evolved amid rising European tensions, particularly after the rise of Nazism in 1933, when Switzerland invested 100 million Swiss francs in military enhancements and mobilized 430,000 troops by 1939, building 250 fortifications including major alpine strongholds like the Gotthard Pass complex equipped with 120-mm to 155-mm artillery. In July 1940, General Henri Guisan formalized the Redoubt through Operationsbefehl Nr. 12, shifting the entire army—peaking at 800,000 personnel, or 20% of the population—to fortified positions in the central Alps, such as Gotthard, St. Maurice, and Sargans, to deter invasion during World War II by denying key passes and infrastructure. The strategy incorporated hundreds of bunkers and pillboxes, supported by investments totaling 657 million Swiss francs in permanent defenses, ultimately contributing to Switzerland's successful neutrality without direct combat. Belgium's National Redoubt centered on , established as a fortified fallback position following independence in 1830, with the initial ring of defenses designed by engineer Henri Alexis Brialmont and constructed starting in 1859 to create an inner bastion capable of sustaining the army and government. This evolved into a dual-ring system by 1906, when the outer belt (Buitenlinie) was added, comprising 35 forts, 14 entrenchments, and an anti-tank canal, forming a defensive perimeter of approximately 95 kilometers around the city and its port to serve as a last redoubt against German aggression. During World War I, in September 1914, following early German victories including the fall of Liège, Belgian forces retreated to . The Redoubt's defense, including the siege from October 3 to 10, delayed the German advance by 12 days during the siege and longer overall, allowing Allied reinforcements under Winston Churchill to arrive, though the position was ultimately outflanked and besieged, leading to the city's surrender on October 10, 1914. The fortifications, while innovative for their era, proved vulnerable to modern artillery and mobile warfare, highlighting the limitations of static defenses in industrialized conflict.) The Nazi Alpine Redoubt, or Alpenfestung, was conceived in late 1944 as a potential fallback stronghold for the remnants of the German military in the event of total defeat, envisioned as a fortified zone in the Austrian and northern to sustain guerrilla resistance and prolong the war. Proposed amid collapsing fronts, the plan involved concentrating estimated 200,000 to 300,000 troops, including elite units, in the and Bavarian regions, supported by the organization for sabotage, but it received only provisional endorsement from and lacked substantive resource allocation or construction. In reality, the Redoubt was never fully realized, with minimal fortifications identified by Allied forces in and activities limited to sporadic assassinations, such as the killing of Aachen's mayor ; post-war investigations confirmed no major stronghold existed. Allied fears, amplified by intercepted intelligence and Nazi , exaggerated the threat, prompting strategic shifts like a southward Allied advance, though U.S. intelligence later deemed it a influencing unnecessary deployments. In , the Karlsborg Fortress exemplified an early 19th-century concept, initiated in as the core of a central strategy following the loss of to in 1809, intended to serve as an inland housing the royal family, government, and army reserves during invasion. Construction, planned for a decade but extending to 1909 due to resource constraints, created a massive pentagonal fortress on Lake Vättern with extensive walls and retrenchments, designed to protect central Sweden and facilitate a prolonged standoff against eastern threats. Though never tested in major conflict, Karlsborg symbolized Sweden's shift toward interior fortifications over coastal defenses, influencing later until obsolescence in the .

References

  1. [1]
    REDOUBT Definition & Meaning - Merriam-Webster
    Oct 10, 2025 · 1. a : a small usually temporary enclosed defensive work b : a defended position : protective barrier 2. a secure retreat : stronghold
  2. [2]
    Redoubts – America's Forts During the Revolutionary War
    Nov 28, 2018 · Redoubts were field forts. During the American Revolution they became the primary fortification of a rebel army; an army with very limited ...
  3. [3]
    BUILDING AND ATTACKING REDOUBTS
    A redoubt was little more than a ditch with a wall behind it built from the dirt dug out of the ditch. Some were just that, but most were more sophisticated.
  4. [4]
    Yorktown Redoubt No. 10 - USAHEC - Army War College
    A means of defense surrounding a redoubt, made of large tree branches facing the enemy, with the branches sharpened and the trunk partially buried in the ...
  5. [5]
    Redoubt 3 (U.S. National Park Service)
    Jun 5, 2025 · Redoubt 3 is the site of a partially reconstructed earthworks fortification originally constructed by Continental troops during the encampment.
  6. [6]
    The Redoubts At Yorktown - Warfare History Network
    At nightfall on October 14, 1781, 150 British and Hessian soldiers sheltered in two small earthen fortifications at Yorktown, Virginia. Across the field from ...<|control11|><|separator|>
  7. [7]
    REDOUBT Definition & Meaning - Dictionary.com
    noun Fortification. any safe and secure place or situation; refuge; stronghold: Lebanon has represented one of the last redoubts of Christianity in the Middle ...
  8. [8]
    A Glossary of Fortification Terms | American Battlefield Trust
    Mar 28, 2018 · Redoubt: An enclosed fortification constructed to defend a position from attack from any direction. Regular Approaches: Digging toward an ...
  9. [9]
  10. [10]
    Fortification in the Wilderness: The Defenses of Fort Necessity
    Nov 12, 2024 · They were generally made from earth or logs and came in many shapes and sizes, generally built to size for the number of defenders.
  11. [11]
    [PDF] Glossary of Terms - New York State Military Museum
    or other weak point of a fort or castle. REDAN: Smaller than a redoubt. A small field fortification with two walls set at a salient angle facing the enemy ...
  12. [12]
    Redoubt - Etymology, Origin & Meaning
    Redout originates from French redoute and Italian ridotto, meaning "small enclosed military work" or "place of retreat," derived from Latin reductus, ...
  13. [13]
    redoubt - Wiktionary, the free dictionary
    Noun · A small, temporary, military fortification. · A reinforced refuge; a fort. · A place of safety or refuge. · 2014, Paul Salopek, Blessed. Cursed. Claimed.
  14. [14]
    redoubt, n. meanings, etymology and more | Oxford English Dictionary
    It is also recorded as a verb from the Middle English period (1150—1500). redoubt is a borrowing from French. Etymons: French redoute, redote, ridotte, ridoute.Missing: old reduire
  15. [15]
    reduce - Wiktionary, the free dictionary
    Etymology. From Middle English reducen, from Old French reduire, from Latin redūcō (“reduce”); from re- (“back”) + dūcō (“lead”). See duke, and compare with ...
  16. [16]
    Reduce - Etymology, Origin & Meaning
    also redout, "small, enclosed military work," c. 1600, from French redoute (17c.), from Italian ridotto, earlier ridotta, "place of retreat," from Medieval ...
  17. [17]
    (PDF) How to build a redoubt? Instructions from military manuals of ...
    Two ways of building a redoubt There are two basic ways of building redoubts, which depend on the quality of soil on the construction site. The first type ...
  18. [18]
    “I have never spared the Spade and Pick Ax”: Fortifications in the ...
    A redoubt was a small, self-contained fort consisting of a wall, ditch, and other obstacles like abatis or sharpened stakes (fraise). Redans were a similar ...
  19. [19]
    Building and Attacking Redoubts - Journal of the American Revolution
    Jun 24, 2015 · A redoubt was little more than a ditch with a wall behind it built from the dirt dug out of the ditch. Some were just that, but most were more sophisticated.Missing: armaments mechanisms
  20. [20]
    Redoubt 6 - Constitution Island - Fort Wiki
    Sep 23, 2021 · Constructed of stone with dry masonry construction and may have had palisade on the parapet. Redoubt 6 was meant to hold some 120 infantrymen ...
  21. [21]
    Thucydides on the siege of Plataea - Livius.org
    Jul 16, 2020 · The town was bravely defended but eventually fell in 427; all defenders were killed after a mock trial. The translation of Thucydides, History ...
  22. [22]
    Refuge behind the city's walls - Ancient World Magazine
    Mar 22, 2013 · Fortifications such as walls and gates seem to have had an obvious defensive purpose. But how effective were they in keeping the enemy at bay?
  23. [23]
    Marching or Temporary Camp - Roman Britain
    Temporary marching camps were created to protect the legions on the move. At the end of each day's march a fortification was created that involved the digging ...
  24. [24]
    Types and History of Castles - Ancient Castles & Roman Forts
    The Romans' own fortifications (castra) varied from simple temporary earthworks thrown up by armies on the move, to elaborate permanent stone constructions.
  25. [25]
    Motte-and-bailey castles | Castellogy
    Wooden structures on mottes could be protected by skins and hides to prevent them being easily set alight during a siege. The bailey. Castle Acre Castle, ...
  26. [26]
    Five Crusader Fortifications in the Medieval Levant - Brewminate
    Nov 16, 2018 · Taking a tour through five well-known 13th-century fortifications and castles built by Crusaders in the Levant.Missing: field | Show results with:field<|separator|>
  27. [27]
    How medieval fortresses were built for war | National Geographic
    Dec 19, 2024 · The Alcázar de Segovia in Spain, for example, was built as a fort in the 12th century and later became a palace for the Castilian monarchs. ...
  28. [28]
    The Early Effects of Gunpowder on Fortress Design: A Lasting Impact
    Mar 9, 2014 · This essay follows the advancement of gunpowder tactics in late medieval and early Renaissance Europe.
  29. [29]
    [PDF] The Early Effects of Gunpowder on Fortress Design: A Lasting Impact
    Oct 25, 2015 · The fourteenth-century introduction of gunpowder hardly produced an instantaneous universal adoption of artillery, and contemporary military ...
  30. [30]
    Geometry of bastion fortifications magistral line: influences and ...
    Feb 11, 2025 · This paper spotlights the principles of bastion fortress design based on geometry, offering a way to identify markers of influence in observed examples.
  31. [31]
    Vauban And Fort Barraux - Atelier des Dauphins
    Vauban finally creates the South redoubt. Design by Vauban (1692). Historical Services of the French Army (Vincennes) (Click to ...
  32. [32]
    [PDF] h-france review
    development of the bastioned trace italienne. Its success ushered in a ... just about any redoubt. This latter approach became associated with Menno ...
  33. [33]
    [PDF] Medieval and Later Fieldworks - Historic England
    Oct 1, 2018 · The main characteristics of the trace italienne were low wide walls or ramparts to absorb shot and projecting from them four-sided angled.
  34. [34]
    [PDF] 7. 1644 - Lead shot from the Civil War Siege of Lyme
    Significance. Providing probable evidence of the Siege of Lyme, this lead shot was found in 1933 on the site of a defensive fort.
  35. [35]
    Siege of Basing House - English Civil War - British Battles
    The siege and destruction in Hampshire during the English Civil War of one of England's greatest houses between 1642 and 14 th October 1645.
  36. [36]
    Basing House | Hampshire Cultural Trust
    The nationally important ruins and grounds of the largest private house in Tudor England, which suffered at the hands of Oliver Cromwell during the English ...
  37. [37]
    Surrey, Hampshire & Sussex 1643 - BCW Project
    I n the aftermath of the first battle of Newbury (September 1643), the ... The main assault was on a line of earthern fortifications to the north of ...
  38. [38]
    The Fortifications at the time of the Great Siege - The Malta Independent
    ### Summary of Landward Defenses, Temporary Fortifications, and Redoubts During the Great Siege of Malta (1565)
  39. [39]
    The Great Siege Of Malta, 1565: The Crusaders' Last Stand
    Jul 1, 2019 · In a nutshell: The siege of Malta​​ The Hospitallers and the local population successfully held out until a relief force arrived, halting the ...Missing: redoubts Corradino Burmarrad
  40. [40]
    A Turning Point For Europe: The Siege of Malta 1565 | History Hit
    It was the job of the Knights of Malta, led by Jean Parisot de Valette, to protect the island from the Ottoman Empire.Missing: redoubts Hospitaller Corradino Burmarrad outcome
  41. [41]
    Men of action: French influence and the founding of American civil ...
    Aug 10, 2025 · Influential engineers and educators such as Duportail, Crozet, and Mahan were educated in French schools, and the methods they learned played an ...
  42. [42]
    France and the American Revolution
    Franklin and others worked to secure secret shipments of French weapons, equipment, and uniforms. In 1778, the relationship between France and the United States ...France And The American... · What Side Did France Choose... · Who Were The Famous French...Missing: engineering redoubts
  43. [43]
    Bunker Hill Battle Facts and Summary | American Battlefield Trust
    In 1775, the Americans marched past Bunker Hill and fortified Breed's Hill instead. No one knows why they chose a position on the lower hill, but that is where ...
  44. [44]
    The Battle of Bunker Hill - Massachusetts Historical Society
    The high point of the mile-long Charlestown peninsula was Bunker Hill—it rose 110 feet, and adjoined the only route of retreat, the roadway back to Cambridge.
  45. [45]
    Yorktown | Assaults on Redoubts 9 and 10 | Oct 14, 1781
    Alexander Hamilton and the Vicomte de Viomenil each led 400 American and French troops against the 9th and 10th redoubts, just south of the British inner ...Missing: context Continental
  46. [46]
    Forts and Fortifications of the Revolutionary War
    Dec 10, 2020 · Outside of the dry moat they would place tangled tree branches that was called abatis that would act as an early form barbed wire and could ...
  47. [47]
    [PDF] The Influence of Partisan Guerilla Warfare on
    Partisan leaders like Francis Marion and the guerrilla warfare strategy they employed in South Carolina during the Revolution turned the tide towards an ...
  48. [48]
    How Winston Churchill Prolonged the Defense of Antwerp in World ...
    Sep 9, 2020 · As plans developed, the idea of a National Redoubt became firmly lodged into the Belgian national consciousness. Antwerp was designated to ...Missing: concept | Show results with:concept
  49. [49]
    None
    Summary of each segment:
  50. [50]
    [PDF] Self Analysis Report Antwerp - EFFORTS Europe
    In 1906 the Belgian government decided to build a second, armored fort belt around Antwerp: the 'Buitenlinie' (outer belt) of the National Reduit. For this ...
  51. [51]
    [PDF] Belgium and the Entente's Military Planning for a War Against ...
    The redevelopment of the national redoubt at Antwerp from 1906, ... 'The French Army and the Spirit of the Offensive, 1900-14' in Brian Bond & Ian Roy (eds.), War ...
  52. [52]
    [PDF] Thomas Boghardt U.S. Army Intelligence in Germany, 1944–1949
    Apr 23, 2025 · ... Nazi propaganda “might well become the nucleus of the German postwar underground movement.”83. Intelligence Myths: The Alpine Redoubt and the ...
  53. [53]
    [PDF] ULTRA AND THE MYTH OF THE GERMAN “NATIONAL REDOUBT”
    The concept of a National Redoubt began in neutral Switzerland, surrounded by Axis territory. To preserve their neutrality the Swiss began building large ...
  54. [54]
    [PDF] John Ericsson and the transformation of the Swedish naval doctrine
    Investments were made in a new central depot fortress, Karlsborg, which was an important part of the army's strategic doctrine, but the fortifications ...