US ResearchConflictsRevolutionary WarStorming of Fort Griswold (Benedict Arnold)
Revolutionary War

Storming of Fort Griswold (Benedict Arnold)

1781
Connecticut
Era
Revolutionary War
Year
1781
Location
Connecticut
Status
Historical record
The Combatants

Who Fought

Forces
Not recorded in historical accounts
Forces
British forces led by Brigadier General Benedict Arnold and Lieutenant Colonel Edmund Eyre: described as more numerous
VS
Victor
British
Forces
American militia led by Lieutenant Colonel William Ledyard: described as a small Connecticut militia force
Outcome
The British breached and captured Fort Griswold, and New London was burned along with several ships. However, the high number of British casualties during the overall expedition against Groton and New London led to criticism, and many ships escaped upriver.
The Battle

History & Significance

The Battle of Groton Heights was part of a larger British raid ordered by Lieutenant General Sir Henry Clinton against the port of New London, Connecticut. Clinton's strategic objective was to divert General George Washington from marching against Lord Cornwallis's army in Virginia. This diversionary raid represented an attempt to relieve pressure on British forces in the South by forcing the American commander to redirect his attention and resources to the defense of Connecticut.

The engagement centered on the Connecticut militia's defense of Fort Griswold, located across the Thames River in Groton, Connecticut. The American forces were led by Lieutenant Colonel William Ledyard, while the British attackers were commanded by Brigadier General Benedict Arnold and Lieutenant Colonel Edmund Eyre. The battle was marked by stubborn American resistance to British attempts to capture the fort. Several leaders of the attacking British force were killed or seriously wounded during the assault. The British eventually succeeded in breaching the fort's defenses, but as they entered, the Americans surrendered. Despite the American surrender, the British continued firing and killed many of the defenders, resulting in significant casualties among those who had laid down their arms.

While the British achieved tactical success in capturing Fort Griswold and burning New London along with several ships, the raid came at considerable cost. The high number of British casualties sustained during the overall expedition against Groton and New London drew criticism of the operation. Many ships in the harbor managed to escape upriver, preventing a complete destruction of New London's maritime resources. The raid demonstrated both the vulnerability of American coastal settlements to British operations and the determination of American militia forces to resist British incursions, despite being outnumbered.

Historical context

The American Revolutionary War (1775–1783) grew from colonial resistance to British taxation without parliamentary representation — a dispute that radicalized through the Stamp Act (1765), the Townshend Acts (1767), and the Boston Massacre (1770). Fighting began at Lexington and Concord in April 1775; the Continental Congress declared independence on July 4, 1776. The Continental Army under George Washington faced severe shortages of supplies and troops, enduring the brutal winter at Valley Forge (1777–1778) before French alliance and French financing turned the military balance. Major engagements included Bunker Hill (1775), Trenton (1776), Saratoga (1777) — which secured French intervention — and Yorktown (1781), where British General Cornwallis surrendered to Washington. An estimated 25,000 American soldiers died in service, from combat, disease, and captivity. The Treaty of Paris (1783) recognized American independence and ceded British territory east of the Mississippi, though it left unresolved questions about Indigenous land rights and the status of Loyalists.

Casualties & Losses

~200 total

Questions & Answers

Frequently Asked Questions

When did Storming of Fort Griswold (Benedict Arnold) take place?
Storming of Fort Griswold (Benedict Arnold) took place in 1781.
Where was Storming of Fort Griswold (Benedict Arnold) fought?
Storming of Fort Griswold (Benedict Arnold) was fought in Connecticut, United States.
What was the outcome of Storming of Fort Griswold (Benedict Arnold)?
The British breached and captured Fort Griswold, and New London was burned along with several ships. However, the high number of British casualties during the overall expedition against Groton and New London led to criticism, and many ships escaped upriver.
What was the significance of Storming of Fort Griswold (Benedict Arnold)?
The Battle of Groton Heights was part of a larger British raid ordered by Lieutenant General Sir Henry Clinton against the port of New London, Connecticut. Clinton's strategic objective was to divert General George Washington from marching against Lord Cornwallis's army in Virginia. This diversionar
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All battles in Connecticut
Source

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