American Revolutionary War: British reinforcements brought an end to the Patriot attempt to capture Fort Cumberland in Nova Scotia.

The American Revolutionary War, also known as the Revolutionary War or American War of Independence, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot forces organized as the Continental Army and commanded by George Washington defeated the British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war. But Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war in the Treaty of Paris two years later, in 1783, in which the British monarchy acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and sovereign nation.

Patriots were colonists in the Thirteen Colonies who opposed the Kingdom of Great Britain's control and governance during the colonial era and supported and helped launch the American Revolution that ultimately established American independence. Patriot politicians led colonial opposition to British policies regarding the American colonies, eventually building support for the adoption of the Declaration of Independence, which was adopted unanimously by the Second Continental Congress on July 4, 1776.

The Battle of Fort Cumberland was an attempt by a small number of militia commanded by Jonathan Eddy to bring the American Revolutionary War to Nova Scotia in late 1776. With minimal logistical support from Massachusetts and four to five hundred volunteer militia and Natives, Eddy attempted to besiege and storm Fort Cumberland in central Nova Scotia in November 1776.

Fort Beauséjour, renamed Fort Cumberland in 1755, is a large, five-bastioned fort on the Isthmus of Chignecto in eastern Canada, a neck of land connecting the present-day province of New Brunswick with that of Nova Scotia. The site was strategically important in Acadia, a French colony that included primarily the Maritimes, the eastern part of Quebec, and northern Maine of the later United States. The fort was built by the French from 1751 to 1752. They surrendered it to the British in 1755 after their defeat in the Battle of Fort Beauséjour, during the Seven Years' War. The British renamed the structure as Fort Cumberland. The fort was strategically important throughout the Anglo-French rivalry of 1749–63, known as the French and Indian Wars by British colonists. Less than a generation later, it was the site of the 1776 Battle of Fort Cumberland, when the British forces repulsed sympathisers of the American Revolution.