This Day in History – March 17, 1776 Tags: 18th century American history, American Revolutionary War, Boston Harbor, British withdrawal to Halifax, Continental Army, Continental Congress, Dorchester Heights, end of the Siege of Boston, Evacuation Day Massachusetts, Evacuation of Boston, first major victory for Washington, General William Howe, George Washington, Henry Knox, March 17 1776, March 17 1776 history, Massachusetts history, Military Strategy, naval evacuation, Noble Train of Artillery, Nova Scotia, Patriot triumph, revolutionary, Siege of Boston, strategic artillery placement, this day in history, This Day in History March 17, Ticonderoga cannons, US History, Share on: Share: This is where the text will go.View our photo collection! View Collection