Battle of Fort Washington (1776): The Fall of Manhattan

Battle at a Glance

Historical Background

The British Conquest of New York

By November 1776, the British army had won a series of victories in the campaign for New York. General Sir William Howe had defeated George Washington on Long Island in August, occupied New York City in September, and compelled the Continental Army to abandon much of Manhattan. Nevertheless, Washington repeatedly avoided the destruction of his principal army, withdrawing northward whenever British movements threatened to cut off his escape.

Howe’s October operations at Throg’s Neck and Pell’s Point forced Washington to retreat into Westchester County. The Battle of White Plains on October 28 resulted in another British tactical victory, but Washington again preserved his army. By early November, the Americans had withdrawn toward North Castle, leaving an isolated garrison at Fort Washington in northern Manhattan.

Why Fort Washington Had Been Built

Fort Washington occupied high ground overlooking the Hudson River. Its original purpose was to help obstruct British navigation through the river corridor, working in conjunction with Fort Lee on the New Jersey shore. American commanders hoped that artillery batteries, river obstacles, and elevated defensive positions would make British passage difficult and dangerous.

The fortification formed part of a larger defensive system that included outlying redoubts, batteries, and fieldworks spread across northern Manhattan. Its strategic importance was connected to the Hudson River, but the fort itself could not completely control the waterway.

The Hudson River Obstacle System

American engineers attempted to obstruct British vessels with underwater barriers and defensive artillery. These measures were intended to prevent warships from sailing past the forts and threatening American communications farther north.

In October, however, British warships demonstrated that they could pass the defenses. The failure to close the river weakened the original justification for retaining Fort Washington. If British ships could navigate the Hudson despite the American batteries, the fort’s value as a river barrier was substantially reduced.

The Decision to Retain the Fort

Washington became increasingly concerned about the vulnerability of the Manhattan garrison. Major General Nathanael Greene, responsible for important American positions in the area, believed that Fort Washington could still be defended and that its retention offered military advantages.

The decision to hold the fort reflected competing judgments about the value of the position, the strength of its defenses, and the risk of abandoning valuable artillery and supplies. Colonel Robert Magaw, commanding the garrison, believed that his men could resist an attack.

Washington did not personally command the defense on November 16. His main army was positioned outside Manhattan, and he could not readily reinforce the fort once the British assault began.

Howe Prepares to Eliminate the Garrison

Howe recognized that the isolated fort presented an opportunity to inflict a major defeat. The British possessed sufficient troops to attack from several directions, while the American defenders were spread across an extensive perimeter.

The British plan called for converging assaults that would overwhelm the outer defenses and force the Americans into the central fortification. Once surrounded, the garrison would have little prospect of escape.

Commanders & Participating Forces

American Command Structure

Colonel Robert Magaw commanded the American garrison. His force consisted of Continental regiments, riflemen, and other detachments stationed in and around the fort. The defenders were distributed among the main fortification, northern heights, eastern approaches, and southern defensive works.

Robert Magaw

Robert Magaw was a Pennsylvania officer who commanded the garrison at Fort Washington. He faced the difficult responsibility of defending a large and irregular position with approximately 3,000 men against a substantially larger enemy.

His defensive system depended upon troops holding the outer approaches long enough to prevent the British from reaching the central fort. Once those positions collapsed, Magaw faced the prospect of a crowded garrison surrounded by enemy forces with little opportunity to escape.

Moses Rawlings and the Riflemen

Lieutenant Colonel Moses Rawlings commanded the Maryland and Virginia Rifle Regiment, whose soldiers fought on the northern heights. These men were associated with the American rifle tradition and included troops capable of accurate fire from broken ground and rocky positions.

Their defense against Hessian attackers became one of the most fiercely contested portions of the battle. The northern riflemen inflicted losses but were eventually forced back by superior numbers and attacks against their position.

Lambert Cadwalader and the Southern Defense

Lieutenant Colonel Lambert Cadwalader commanded Pennsylvania troops defending approaches south of the main fort. His men confronted British formations advancing through the lower ground and wooded slopes.

As British troops threatened to envelop the American positions, Cadwalader’s command withdrew toward the fort. The southern fighting contributed to the collapse of the outer defensive perimeter.

British and German Command

Howe coordinated the assault through several attacking columns. German auxiliary troops, commonly called Hessians, played a major role, especially in the northern attack. British regulars advanced against the eastern and southern approaches.

British Regular Infantry

The British attackers included experienced infantry capable of coordinating advances, deploying under fire, and attacking defensive works with bayonets. Their advantage was not simply numerical. The British could commit fresh troops against several sectors while the American garrison struggled to reinforce threatened positions.

German Auxiliary Forces

The German formations under Knyphausen advanced against some of the most difficult terrain on the battlefield. Their attack required soldiers to climb steep, rocky slopes while facing rifle fire from Americans positioned above them.

Johann Rall, who participated in the northern assault, later commanded the Hessian garrison at Trenton and was mortally wounded during Washington’s December 26 attack.

Distinguishing the Garrison from the Main Army

Washington’s army was not entirely inside Fort Washington. The approximately 3,000 men under Magaw represented an isolated garrison, while the main Continental Army remained outside Manhattan.

This distinction is essential when researching the battle. A soldier serving in Washington’s army in November 1776 was not necessarily present at Fort Washington or among the prisoners taken there.

Battlefield Geography & Terrain

Northern Manhattan’s Defensive Landscape

Fort Washington occupied high ground in northern Manhattan, near the present-day Washington Heights neighborhood. The surrounding landscape consisted of steep ridges, rocky slopes, wooded areas, ravines, and narrow approaches.

The terrain offered substantial defensive advantages, particularly against troops advancing uphill. Yet it also created a complicated perimeter that was difficult to defend with a limited number of soldiers.

The Central Fortification

The principal fort stood on elevated ground near the highest portion of Manhattan. It was an earthwork designed to support artillery and provide a central defensive position.

However, the fort was not a massive stone fortress capable of sheltering thousands of soldiers during a prolonged siege. Much of the garrison had to defend positions outside the central works, leaving the fort itself vulnerable once those lines were breached.

The Northern Heights

The northern approaches included steep, rocky elevations and difficult climbing terrain. These positions were defended in part by Rawlings’s riflemen, who could fire from natural cover against German troops attempting to advance uphill.

The terrain favored the defenders initially, but the extensive frontage made it difficult to prevent the attackers from working around exposed positions.

The Harlem River Approaches

To the east, the Harlem River separated Manhattan from the mainland. British forces used boats to cross the water and attack the American defenses from that direction.

The crossing allowed Howe to threaten a sector that could not be reinforced easily from the northern and southern positions once the battle intensified.

The Southern Defensive Line

South of the central fort, American troops occupied a series of defensive positions extending across the island’s broken ground. These positions were intended to delay British troops approaching from the south.

Cadwalader’s soldiers fought in this sector before withdrawing toward the main fortification as British pressure increased.

The Hudson River and Fort Lee

The Hudson River lay west of Fort Washington, separating Manhattan from the American position at Fort Lee in New Jersey. The two forts had originally been intended to cooperate in controlling river traffic.

By November, British naval superiority and control of much of Manhattan had severely weakened that defensive arrangement. The river also complicated any attempt to evacuate Magaw’s garrison once the British attack began.

Fort Tryon and the Northern Battlefield

Present-day Fort Tryon Park occupies part of the landscape associated with the northern fighting. The area’s rocky elevations help illustrate the physical difficulties faced by attacking Hessian troops.

Modern roads, buildings, and landscaping have changed the battlefield, and the exact locations of individual eighteenth-century defensive positions require careful comparison with historical maps.

The Geographic Weakness of the American Defense

Fort Washington’s greatest weakness was the distance between its defensive positions. The Americans attempted to hold a broad perimeter against a force capable of attacking from multiple directions.

Once the British broke through the outer defenses, the Americans could not easily concentrate enough troops to restore the line. The surrounding rivers and enemy positions left few routes for escape.

Weapons, Equipment & Logistics

American Muskets and Rifles

The American garrison carried a mixture of smoothbore muskets and rifles. Muskets were useful for coordinated infantry volleys, while rifles offered greater accuracy under favorable conditions but generally required more time to reload.

Rawlings’s riflemen could exploit the northern terrain by firing from behind rocks and natural cover. Their weapons were effective against exposed attackers, but rifles without bayonets placed their users at a disadvantage if enemy infantry closed to hand-to-hand range.

British and Hessian Infantry Weapons

British regulars and German auxiliary soldiers generally carried military flintlock muskets equipped with bayonets. Their training emphasized coordinated movement and the ability to attack defensive positions after delivering musket fire.

At Fort Washington, bayonets became especially important as the attackers advanced through the outer positions and forced American defenders to retreat.

American Artillery

Fort Washington contained artillery intended to defend the approaches and threaten British vessels using the Hudson River. The guns represented a substantial investment in equipment, ammunition, and trained personnel.

Once the fort surrendered, much of this equipment passed into British hands. The loss weakened the American army beyond the immediate loss of manpower.

British Artillery Support

British artillery helped prepare and support the assault. Cannon fire could disrupt American positions and force defenders to remain under cover while infantry advanced.

However, the battle was not decided by artillery alone. British and German infantry had to cross difficult terrain, attack defended slopes, and occupy the American positions.

Engineering and Fieldworks

The American defenses included earthworks, batteries, and smaller fortified positions spread across northern Manhattan. These works could protect soldiers from direct fire but were vulnerable when approached from the flank or rear.

The broad defensive perimeter required more manpower than Magaw possessed to defend every approach with equal strength.

British Amphibious Movement

The eastern attack required boats to carry troops across the Harlem River. Coordinating the crossing with attacks from other directions was essential to the British plan.

The use of waterways allowed Howe to exploit British naval resources and place pressure upon the Americans from a direction that complicated their defensive arrangements.

The Supply Problem Inside the Fort

The garrison required food, ammunition, water, medical supplies, and equipment to sustain its defense. The large number of soldiers eventually crowded into the central fortification created a severe logistical problem.

Even if Magaw had rejected the surrender demand, the defenders faced the prospect of continued attack without reliable reinforcement or evacuation.

The Material Cost of Defeat

The British captured substantial artillery, small arms, ammunition, and other military stores. These losses were especially damaging because the Continental Army had limited resources and could not easily replace trained soldiers or heavy equipment.

Intelligence & Operational Planning

The Debate Over Evacuation

Following the British passage of warships up the Hudson and the withdrawal from White Plains, Washington questioned whether Fort Washington should continue to be held. The fort had been intended to obstruct river navigation, but its strategic purpose was increasingly doubtful.

Greene and Magaw believed that the position could withstand an attack. Washington ultimately permitted the garrison to remain, a decision that exposed thousands of soldiers to capture.

British Knowledge of the Defenses

The British gathered information about Fort Washington’s defensive arrangements before the assault. One particularly significant episode involved William Demont, an American officer who deserted and supplied the British with information about the fort.

Demont’s intelligence helped the British understand the American positions, although the defeat cannot be attributed to that information alone. British numerical superiority, the broad American perimeter, and the converging attack were also decisive.

Howe’s Plan of Attack

Howe organized an assault from several directions. German troops under Knyphausen would attack from the north, British troops would cross the Harlem River from the east, and other British formations would pressure the southern defenses.

The objective was to prevent the Americans from concentrating their limited forces against a single attack. If the outer lines collapsed simultaneously, Magaw’s soldiers would be driven toward the central fort.

The Northern Attack

Knyphausen’s German troops advanced through steep and rocky terrain. Rawlings’s riflemen occupied favorable defensive ground and inflicted losses upon the attackers.

Despite the resistance, the German troops continued advancing and gradually forced the Americans from their positions.

The Eastern River Crossing

British troops crossed the Harlem River and attacked the American defenses from the east. This movement placed additional pressure upon the garrison and complicated efforts to reinforce the northern and southern sectors.

The Southern Assault

British troops advanced against Cadwalader’s defensive positions south of the fort. The Americans resisted but eventually withdrew as British forces threatened their flanks and rear.

The Collapse of the Outer Perimeter

By the afternoon, American troops from several directions were retreating toward the central fortification. The defenders had lost much of the terrain that protected the fort and were increasingly surrounded.

The concentration of thousands of men inside the fort created a dangerous situation. Magaw lacked the means to restore the outer defenses or conduct an orderly evacuation.

The Surrender Decision

The British demanded surrender after their forces reached positions surrounding the fort. Magaw initially sought additional time, but the military situation offered little realistic prospect of continued resistance.

He surrendered the garrison on November 16. The British took possession of the fort, its artillery, and nearly 3,000 prisoners.

Battle of Fort Washington: Interactive Timeline

Tactical Analysis & Command Decisions

Phase One: The British Encirclement

Howe’s army approached Fort Washington with overwhelming numerical superiority. Rather than concentrate against one defensive position, the British planned to attack the American perimeter from several directions.

The plan forced Magaw to distribute his limited troops across a broad area. The Americans could not reinforce every threatened sector without weakening another part of the line.

Phase Two: Knyphausen’s Northern Assault

German troops under Knyphausen advanced against the northern heights, where Rawlings’s riflemen occupied rocky defensive positions. The steep slopes and natural cover initially favored the Americans.

Rifle fire slowed the attackers and inflicted casualties. Nevertheless, the German troops pressed forward, using superior numbers to threaten the defenders’ flanks and eventually force them to withdraw.

Phase Three: The Harlem River Crossing

British troops crossed the Harlem River and attacked the eastern defenses. The crossing was an important component of Howe’s plan because it threatened a separate part of the American perimeter while the northern assault was underway.

The Americans could not concentrate their entire force against the Hessians without leaving the eastern approaches exposed.

Phase Four: The Southern Attack

British formations advanced against the southern defensive positions held in part by Cadwalader’s troops. The Americans resisted, but British movements threatened to envelop the defenders.

Cadwalader’s men withdrew toward the fort as the southern line became untenable.

Phase Five: Collapse of the Defensive Perimeter

The separate American positions could no longer support one another effectively. As the northern, eastern, and southern defenses gave way, soldiers retreated toward the central fort.

The British captured the surrounding heights and gained positions from which they could threaten the remaining garrison.

Phase Six: The Central Fort Becomes Overcrowded

Thousands of American soldiers concentrated within and around the central fortification. The position was not designed to shelter such a large force under prolonged bombardment and assault.

With British troops controlling the approaches and the Hudson River limiting evacuation, Magaw faced an increasingly hopeless situation.

Phase Seven: The Surrender

The British demanded surrender after the collapse of the outer defenses. Magaw ultimately accepted the demand, ending organized resistance.

The British captured the fort, its artillery, and nearly the entire American garrison.

Conceptual Tactical Diagram

This diagram illustrates the converging British and Hessian assaults against Fort Washington. It is schematic, not drawn to scale, and does not identify the exact positions of individual regiments.

Why the British Assault Succeeded

The British possessed enough troops to attack several sectors simultaneously. Their coordinated movements prevented Magaw from concentrating his limited force against one threat.

The American defensive positions were strong individually but too widely separated to support one another once the British gained ground. The attackers exploited this weakness and forced the garrison into the central fort.

Why the Americans Could Not Escape

Unlike Washington’s main army, Magaw’s garrison occupied an isolated position surrounded by enemy forces and waterways. Once the outer defenses collapsed, organized evacuation became extremely difficult.

The surrender resulted not simply from the loss of terrain but from the destruction of the garrison’s ability to maneuver, reinforce its defenses, or withdraw.

The Soldier’s Experience

Defending the Rocky Heights

American soldiers stationed on the northern heights occupied steep and broken ground overlooking the approaches to Fort Washington. Rocks, trees, and irregular slopes provided natural cover from which riflemen could fire upon advancing Hessian troops.

The defenders could see the enemy climbing toward them, but their elevated position did not guarantee safety. As the attackers advanced around the flanks, the Americans risked being cut off from the central fort.

The Hessian Assault

German troops advancing from the north faced difficult terrain and American rifle fire. Climbing steep slopes while carrying muskets and equipment required physical effort even before reaching the defenders.

Officers had to maintain control as men moved through rocky ground, encountered obstacles, and came under fire from concealed positions.

The Riflemen’s Resistance

Rawlings’s riflemen used their weapons and terrain to resist the advance. Their fire could be effective against exposed attackers, but the increasing pressure from German troops threatened to overwhelm their positions.

As the defenders withdrew, soldiers had to move across difficult ground while attempting to avoid capture.

The Fighting Along the Southern Defenses

Cadwalader’s soldiers faced British infantry advancing through wooded and uneven terrain. Musket volleys and close fighting placed pressure upon the American line.

The defenders eventually withdrew toward the central fort as the British threatened their flanks and rear.

Margaret Corbin and the Artillery

Margaret Corbin is associated with the defense of Fort Washington. According to the traditional account, she accompanied her husband, artilleryman John Corbin, during the fighting. After he was killed, she assisted in serving the cannon and was seriously wounded.

Her story became an important part of the history of women’s participation in the Revolutionary War. Researchers should distinguish the established historical record of her wartime injuries and subsequent pension from later retellings that supply details not securely documented in contemporary accounts.

Retreating Toward the Fort

As the outer defenses collapsed, American soldiers withdrew toward the central fortification. Men from different units crowded together, and officers struggled to maintain order.

The defenders could see that the British and German troops had captured the surrounding heights. The remaining space for maneuver was rapidly disappearing.

The Surrender

When Magaw surrendered, thousands of American soldiers became prisoners. For many men, the immediate experience was one of disarmament, uncertainty, and separation from the army they had served.

The surrender was particularly devastating because the prisoners represented a substantial number of trained soldiers at a time when Washington could not easily replace them.

British Captivity

Many prisoners taken at Fort Washington endured severe hardship. British prison facilities and prison ships became notorious for overcrowding, disease, inadequate sanitation, and shortages of food.

Not all prisoners experienced identical conditions, and some officers were treated differently from enlisted men. Nevertheless, large numbers of American prisoners died during captivity in the New York region.

The Experience of the Survivors

For soldiers who survived the battle and imprisonment, Fort Washington remained one of the most traumatic events of the 1776 campaign. The defeat destroyed their units’ immediate ability to fight and removed thousands of men from the American war effort.

The battle also illustrated the consequences of defending an isolated position after the main army had withdrawn beyond supporting distance.

Where Was Your Ancestor’s Unit?

The Battle of Fort Washington is especially important for Revolutionary War genealogy because approximately 2,800–2,900 American soldiers were captured. Prisoner records, regimental returns, pension applications, and postwar testimony may provide evidence of individual service.

American Units and Commands

Robert Magaw’s Pennsylvania Regiment

Magaw’s Pennsylvania soldiers formed an important part of the garrison. Researchers should examine the regiment’s service records, officer correspondence, and prisoner lists to establish individual participation.

A soldier’s association with Magaw does not automatically identify his precise defensive position. Company assignments and contemporary accounts may provide more detailed evidence.

The Maryland and Virginia Rifle Regiment

The riflemen under Moses Rawlings were heavily engaged in the northern fighting. Their resistance against Hessian troops became one of the most notable episodes of the battle.

Researchers should look for service records under the regiment’s contemporary name as well as the names of Rawlings and Otho Holland Williams. Unit designations can vary in later histories and pension testimony.

Lambert Cadwalader’s Pennsylvania Troops

Cadwalader’s command defended important positions south of the fort. Soldiers in these formations may have participated in the fighting before withdrawing toward the central works.

Pennsylvania military records and surviving accounts can help distinguish direct combat service from assignment elsewhere in the garrison.

Artillerymen

American artillery personnel served the fort’s batteries and outlying positions. Their records may be found in artillery company returns, military correspondence, and pension applications.

Margaret Corbin’s historical association with the battle also demonstrates the importance of examining records concerning people who supported military operations without fitting conventional enlisted-soldier categories.

British and German Formations

American Prisoner Records

Because nearly the entire garrison was captured, prisoner documentation is a major research priority. Records may identify soldiers taken at Fort Washington, transferred between holding locations, exchanged, released, or deceased in captivity.

Researchers should distinguish the date of capture from later movements through the British prison system. A man recorded in a New York prison in 1777 may have been captured at Fort Washington in November 1776.

Revolutionary War Pension Applications

Veterans who survived the battle sometimes described their capture and imprisonment in pension applications. These statements can provide information about commanders, unit assignments, injuries, and the duration of captivity.

Because pension applications were often recorded decades after the battle, details should be compared with contemporary service records whenever possible.

Researching Soldiers Who Died in Captivity

Some soldiers captured at Fort Washington died while imprisoned. Their deaths may appear in prisoner returns, family correspondence, postwar claims, or pension-related records submitted by surviving relatives.

Researchers should avoid assuming that every soldier missing from a later muster roll died in captivity. Men could also have been exchanged, discharged, transferred, or omitted from incomplete records.

Common Research Errors

Do not assume that every soldier in Washington’s army was present at Fort Washington.

Do not confuse Fort Washington in Manhattan with Fort Washington in Pennsylvania or other similarly named posts.

Do not assume that every American prisoner held in New York was captured during this battle.

Do not treat all German troops as members of Johann Rall’s immediate command.

Do not assume that a soldier’s death in captivity occurred immediately after the surrender.

Do not assign a soldier to the northern, eastern, or southern defenses without evidence of his unit’s position.

Battle Outcome & Casualties

A Decisive British Victory

The Battle of Fort Washington ended with the complete surrender of the American garrison. The British captured the fort, its artillery, military supplies, and nearly 3,000 soldiers.

Unlike White Plains, where Washington preserved his main army after losing Chatterton’s Hill, Fort Washington resulted in the loss of an entire substantial American command.

American Battlefield Casualties

American killed and wounded are commonly estimated in the range of approximately 150–200, although contemporary and later figures vary. These losses occurred during the fighting around the outer defenses and the withdrawal toward the fort.

American Prisoners

Approximately 2,800–2,900 American soldiers became prisoners when Magaw surrendered. The precise total varies among accounts, but the scale of the loss was extraordinary.

Many prisoners later suffered from disease, malnutrition, and harsh conditions while held by the British. Deaths in captivity should be distinguished from casualties sustained during the battle itself.

British and German Casualties

British and German casualties are commonly estimated at approximately 450 killed and wounded, although published totals differ. The northern attack against Rawlings’s riflemen was particularly difficult because of the steep terrain and sustained American resistance.

The Loss of Trained Soldiers

The capture of nearly 3,000 men was more damaging than the loss of the fortification alone. Many of the prisoners had military experience gained during the difficult New York Campaign.

Replacing these men required new recruitment and training at a time when the Continental Army already faced expiring enlistments and shortages of supplies.

The Loss of Artillery and Supplies

The British also captured valuable cannon, ammunition, and equipment. Such material losses were difficult for the Americans to replace because their military supply system remained underdeveloped.

Why Fort Washington Was a Catastrophe

The American decision to retain the fort exposed a large garrison to encirclement after the main army had withdrawn. Once the British launched a coordinated assault, the defenders could neither maintain the extensive perimeter nor escape.

The result was one of the largest single captures of American soldiers during the Revolutionary War.

Strategic Aftermath

The End of American Control of Manhattan

The surrender of Fort Washington eliminated the last major American military position on Manhattan Island. British forces now controlled the island and could consolidate their occupation of New York City.

The victory strengthened Howe’s position and allowed him to turn attention toward the American forces remaining across the Hudson River.

The Abandonment of Fort Lee

Fort Lee, located on the New Jersey side of the Hudson, had been intended to cooperate with Fort Washington in defending the river. After Magaw’s surrender, Fort Lee became increasingly vulnerable.

On November 20, British forces crossed into New Jersey and threatened the American position. Nathanael Greene’s troops withdrew, abandoning supplies and equipment.

Washington’s Retreat Through New Jersey

The loss of the Hudson River forts forced Washington to continue retreating across New Jersey. British forces pursued the Americans, and the Continental Army faced serious shortages, declining morale, and expiring enlistments.

Washington’s priority became the preservation of enough troops to continue the war.

The Prisoner Crisis

The capture of thousands of Americans created a major humanitarian and military problem. Prisoners held in the New York region endured severe conditions, and many died before they could be exchanged or released.

The treatment of prisoners became an enduring source of bitterness between the opposing sides and contributed to the war’s human cost.

The Battle of Trenton

On December 26, Washington crossed the Delaware River and attacked the Hessian garrison at Trenton. The victory restored American morale after the defeats of the autumn campaign.

Johann Rall, who had participated in the assault on Fort Washington, commanded the Hessian troops at Trenton and was mortally wounded during the battle.

Washington’s Strategic Reassessment

Fort Washington reinforced the danger of holding isolated positions that could be surrounded by a superior enemy. Washington increasingly emphasized preserving the Continental Army as a functioning force rather than defending every fortification or piece of territory.

The experience helped shape his approach to later campaigns, in which maneuver, selective engagements, and the survival of the army became central considerations.

The Historical Memory of Fort Washington

The battle became associated with both military failure and individual acts of courage. Rawlings’s riflemen, the Pennsylvania defenders, and Margaret Corbin became important figures in accounts of the fighting.

At the same time, the surrender raised difficult questions about command responsibility, the decision to retain the fort, and the consequences of allowing a large garrison to become isolated.

Why Fort Washington Matters

The Battle of Fort Washington was not merely another British victory in the New York Campaign. It destroyed a substantial American garrison, cost the Continental Army valuable artillery and supplies, and contributed to the abandonment of Fort Lee and the retreat across New Jersey.

Its significance lies in the contrast between the courage of individual defenders and the strategic failure that placed them in an increasingly indefensible position.

Primary Sources & Historical Research

The Battle of Fort Washington can be studied through American and British correspondence, military returns, prisoner records, contemporary maps, and later historical investigations. Particularly important questions concern the decision to retain the fort, the disposition of the outer defenses, the British assault plan, and the fate of the captured garrison.

Primary Sources

1. George Washington’s correspondence, November 1776. Documents the debate over retaining Fort Washington and the consequences of its surrender.
2. Nathanael Greene’s correspondence. Provides evidence concerning the defense of Fort Washington and Fort Lee.
3. Robert Magaw’s military correspondence. Important for understanding the garrison’s defense and surrender.
4. General Sir William Howe’s dispatches. Provide the British account of the operation and capture of the fort.
5. British and German military returns. Help identify attacking formations and casualties.
6. American prisoner records. Document soldiers captured at Fort Washington and their subsequent treatment.
7. Contemporary maps of northern Manhattan. Essential for reconstructing the fort, outlying defenses, and British approaches.
8. Revolutionary War pension applications. May preserve individual soldiers’ accounts of combat, capture, and imprisonment.

Historical Studies

1. Henry P. Johnston, The Campaign of 1776 Around New York and Brooklyn. A detailed study of the New York Campaign incorporating contemporary documents.
2. Barnet Schecter, The Battle for New York: The City at the Heart of the American Revolution. Examines the campaign’s military geography and strategic decisions.
3. David McCullough, 1776. Provides narrative context for the defeats of the autumn campaign.
4. Christopher Ward, The War of the Revolution. A broad military history of Revolutionary War operations.
5. U.S. Army Center of Military History. Publications examining the New York Campaign and Continental Army operations.

Online Historical Resources

1. American Battlefield Trust — Fort Washington. Battle history and campaign context.
2. Founders Online — National Archives. Washington’s correspondence and related documents.
3. Library of Congress — George Washington Papers. Contemporary correspondence and military records.
4. National Archives — Revolutionary War Records. Military service, prisoner, and pension research.
5. U.S. Army Center of Military History. Military history publications and research.
6. New York Public Library — Digital Collections. Historical maps of northern Manhattan and the Hudson River.
7. New-York Historical Society. Revolutionary War manuscripts and historical collections.
8. National Park Service. Historic preservation and Revolutionary War research.
9. The National Archives, United Kingdom. British military correspondence and regimental records.
10. Henry P. Johnston — The Campaign of 1776 Around New York and Brooklyn. Historical narrative and documentary references.

Research Notes and Historical Cautions

Battle date: November 16, 1776.

Battlefield: Fort Washington and the surrounding northern Manhattan heights.

American commander: Colonel Robert Magaw commanded the garrison. George Washington was commander in chief but did not direct the immediate defense from inside the fort.

British commander: General Sir William Howe directed the overall operation.

German participation: Hessian troops under Wilhelm von Knyphausen played a major role in the northern assault.

American strength: Approximately 3,000 soldiers.

British and German strength: Approximately 8,000–9,000 attackers, depending upon the formations included.

American prisoners: Approximately 2,800–2,900, with slight differences among historical accounts.

Battlefield casualties: Estimates vary. Prisoners captured at surrender must be distinguished from men killed or wounded during the fighting.

Margaret Corbin: Her association with the battle and subsequent recognition are historically significant. Specific details of the traditional account should be evaluated against surviving documentation.

William Demont: His desertion and disclosure of American defensive information are relevant to the British preparations, but the defeat had multiple causes.

Terrain: Rocky heights, steep slopes, the Harlem River, the Hudson River, and widely separated defensive works shaped the battle.

Result: Decisive British victory and surrender of the American garrison.

Strategic consequence: The British secured Manhattan, Fort Lee became untenable, and Washington continued retreating through New Jersey.