Invasion of Quebec (1775) in the context of Fort Saint-Jean (Quebec)

The military history of Canada spans centuries of conflicts within the country, as well as international engagements involving the Canadian military. The Indigenous nations of Canada engaged in conflicts with one another for millennia. The arrival of European settlers in the 17th century led to new alliances and hostilities among Indigenous nations and colonial powers, leading to conflicts such as the Beaver Wars.

The late 17th and 18th centuries saw four major British-French conflicts fought in Canada, culminating with the British conquest of New France in 1760. This reshaped the region and contributed to the American Revolutionary War, during which American attempts to seize Quebec and spark a revolt in Nova Scotia failed.

The Olive Branch Petition was adopted by the Second Continental Congress on July 5, 1775, and signed on July 8, 1775, in a final attempt to avoid war between Great Britain and the Thirteen Colonies in America. The Congress had already authorized the invasion of Canada more than a week earlier, but the petition affirmed American loyalty to Great Britain and entreated King George III to prevent further conflict. It was followed by the July 6, 1775 Declaration of the Causes and Necessity of Taking Up Arms, however, which made its success unlikely in London. In August 1775, the colonies were formally declared to be in rebellion by the Proclamation of Rebellion, and the petition was rejected by the British government; King George had refused to read it before declaring the colonists traitors.

Anthony Wayne (January 1, 1745 – December 15, 1796) was an American soldier, officer, statesman, and a Founding Father of the United States. He adopted a military career at the outset of the American Revolutionary War, where his military exploits and fiery personality quickly earned him a promotion to brigadier general and the nickname "Mad Anthony". He later served as the Senior Officer of the Army on the Ohio Country frontier and led the Legion of the United States.

Wayne was born in Chester County, Pennsylvania, and worked as a tanner and surveyor after attending the College of Philadelphia. He was elected to the Pennsylvania General Assembly and helped raise a Pennsylvania militia unit in 1775. During the Revolutionary War, he served in the Invasion of Quebec, the Philadelphia campaign, and the Yorktown campaign. Although his reputation suffered after his defeat in the Battle of Paoli, he won wide praise for his leadership in the 1779 Battle of Stony Point and was awarded the Congressional Gold Medal. Soon after being promoted to major general in 1783, he retired from the Continental Army. Anthony Wayne was a member of the Society of the Cincinnati of the state of Georgia. In 1780, he was elected to the American Philosophical Society.

Richard Montgomery (2 December 1738 – 31 December 1775) was an Irish-born American army officer. First serving in the British Army, he later became a major general in the Continental Army during the American Revolutionary War. On 31 December 1775, Montgomery was killed while leading an unsuccessful invasion of Quebec.

Montgomery was born and raised in Ireland to an Ulster-Scots family. In 1754, he enrolled at Trinity College Dublin, and two years later joined the British army and served in the French and Indian War. He steadily rose through the ranks, serving in North America and the West Indies. After the war he was stationed at Fort Detroit during Pontiac's War, following which he returned to Britain for health reasons. In 1773, Montgomery returned to the Thirteen Colonies, married Janet Livingston, and began farming.

The Battle of Quebec (French: Bataille de Québec) was fought on December 31, 1775, between American Continental Army forces and the British defenders of Quebec City as part of the invasion of Quebec of the American Revolutionary War. The battle was the first major defeat of the war for the Americans, and it came with heavy losses. General Richard Montgomery was killed, Benedict Arnold was wounded, and Daniel Morgan and more than 400 men were taken prisoner. The city's garrison, a motley assortment of regular troops and militia led by Quebec's provincial governor, General Guy Carleton, suffered a small number of casualties.

Montgomery's army had captured Montreal on November 13, and early in December they became one force that was led by Arnold, whose men had made an arduous trek through the wilderness of northern New England. Governor Carleton had escaped from Montreal to Quebec, the Americans' next objective, and last-minute reinforcements arrived to bolster the city's limited defenses before the attacking force's arrival. Concerned that expiring enlistments would reduce his force, Montgomery made the end-of-year attack in a blinding snowstorm to conceal his army's movements. The plan was for separate forces led by Montgomery and Arnold to converge in the lower city before scaling the walls protecting the upper city. Montgomery's force turned back after he was killed by cannon fire early in the battle, but Arnold's force penetrated further into the lower city. Arnold was injured early in the attack, and Morgan led the assault in his place before he became trapped in the lower city and was forced to surrender. Arnold and the Americans maintained an ineffectual blockade of the city until spring, when British reinforcements arrived.