Boston Under Siege: The Revolutionary War Escalates
Colonial militia forces surrounded British-held Boston the day after the battles of Lexington and Concord, trapping General Gage's garrison inside the city. The eleven-month siege bottled up the most powerful army in the world until Henry Knox's artillery from Fort Ticonderoga forced a British evacuation by sea.
April 20, 1775
251 years ago
Key Figures & Places
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