HistoryData
Historical ConflictYorktown

Siege of Yorktown

The Siege of Yorktown was the final major land battle of the American Revolutionary War, forcing British surrender and triggering peace negotiations.

Duration & Scope

1781 ongoing

< 1 year

Estimated Total Casualties

397

Key Facts

Date of surrender
October 19, 1781
British soldiers captured
More than 7,000
Key redoubts stormed
Redoubt No. 9 and Redoubt No. 10
Total casualties (DB)
397
Peace treaty
Treaty of Paris, 1783

Strategic Narrative Overview

De Grasse sailed to Chesapeake Bay and defeated a British relief fleet under Admiral Graves at the Battle of the Chesapeake in early September 1781, cutting off Cornwallis by sea. Washington and Rochambeau arrived at Yorktown on September 28 and encircled the British defenses. Allied forces built siege parallels and bombarded British positions. On October 14, Hamilton's and Deux-Ponts's columns stormed the final outer redoubts, allowing completion of the second parallel and intensifying the bombardment.

01 / The Origins

By 1781, the American Revolutionary War had been ongoing for six years. British Lieutenant General Cornwallis commanded a British army in Virginia, ordered by his superior Henry Clinton to establish a defensible deep-water port at Yorktown. Meanwhile, French and American forces under Washington and Rochambeau were united north of New York City, debating whether to strike New York or Virginia, ultimately choosing Virginia after the French West Indies fleet under de Grasse offered support.

03 / The Outcome

With his position untenable, Cornwallis requested capitulation terms on October 17, 1781. After two days of negotiation, the formal surrender ceremony took place on October 19; Cornwallis himself did not attend. Over 7,000 British troops were captured. The defeat prompted Great Britain to enter peace negotiations with the United States, culminating in the Treaty of Paris in 1783, which recognized American independence.

Belligerents & Mobilization Analysis

Side A

1 belligerent

Continental Army (United States) & French Army/Navy
Key Commanders

George Washington, Comte de Rochambeau, Comte de Grasse, Marquis de Lafayette, Alexander Hamilton.

Side B

1 belligerent

British Army
Peak Mobilized Forces~7K
Estimated Casualties397
Casualty Rate5.7%
Forces vs Casualties ratio
0CasualtiesMobilized
Key Commanders

Charles Cornwallis.

Total Casualties (all sides)
397
Outcome
Decisive Franco-American victory; Cornwallis surrendered with over 7,000 troops, ending major land combat in the Revolutionary War

Kinetic Engagement Axis

Major engagements timeline (1781–present)Timeline of major military engagements plotted chronologically.1781present1781Battle of the Ch…Allied1781Storming of Redo…Allied1781Storming of Redo…Allied

Scroll horizontally to view full axis. Events plotted relatively.

Side A victorySide B victoryInconclusiveDecisive / turning point

Location

Map of Yorktown, United StatesMap of Yorktown, United StatesYorktown, United States