American Revolutionary War: Ethan Allen and a small force of American and Quebec militia failed to capture the city of Montreal from British forces.

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.

Ethan Allen was an American farmer, writer, military officer and politician. He is best known as one of the founders of Vermont and for the capture of Fort Ticonderoga during the American Revolutionary War, and was also the brother of Ira Allen and the father of Fanny Allen.

The Battle of Longue-Pointe was an attempt by Ethan Allen and a small force of American and Quebec militia to capture Montreal from British forces on September 25, 1775, early in the American Revolutionary War. Allen, who had been instructed only to raise militia forces among the local inhabitants, had long had thoughts of taking the lightly defended city. When he reached the southern shore of the St. Lawrence River with about 110 men, he seized the opportunity to try. Major John Brown, whom Allen claimed was supposed to provide additional forces, did not appear as they had planned, isolating Allen and his men on the north side of the river.

Montreal is the largest city in the province of Quebec, the second-largest in Canada, and the ninth-largest in North America. It was founded in 1642 as Ville-Marie, or "City of Mary", and is now named after Mount Royal, the triple-peaked mountain around which the early settlement was built. The city is centred on the Island of Montreal and a few, much smaller, peripheral islands, the largest of which is Île Bizard. The city is 196 km (122 mi) east of the national capital, Ottawa, and 258 km (160 mi) southwest of the provincial capital, Quebec City.