US ResearchConflictsRevolutionary WarSiege of Boston
Revolutionary War

Siege of Boston

1775
Massachusetts
Era
Revolutionary War
Year
1775
Location
Massachusetts
Status
Verified engagement
The Combatants

Who Fought

Defeated
British
Forces
British Army
VS
Victor
American
Forces
American patriot militia
Outcome
British withdrawal
The Battle

History & Significance

The siege of Boston was the opening phase of the American Revolutionary War. In the siege, American patriot militia led by newly-installed Continental Army commander George Washington prevented the British Army, which was garrisoned in Boston, from moving by land. Both sides faced resource, supply, and personnel challenges during the siege.

Duration
334 days (April 19, 1775 – March 17, 1776)
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

c.1,160 British casualties and c.469 American casualties (at Bunker Hill and Breed's Hill, June 1775)

Questions & Answers

Frequently Asked Questions

When did Siege of Boston take place?
Siege of Boston took place in 1775. 334 days (April 19, 1775 – March 17, 1776).
Where was Siege of Boston fought?
Siege of Boston was fought in Massachusetts, United States.
What was the outcome of Siege of Boston?
British withdrawal
What was the significance of Siege of Boston?
The siege of Boston was the opening phase of the American Revolutionary War. In the siege, American patriot militia led by newly-installed Continental Army commander George Washington prevented the British Army, which was garrisoned in Boston, from moving by land. Both sides faced resource, supply,
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Source

Content adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License. Wikipedia source.

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