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The Battle of the Plains of Abraham (13 September 1759), also known as the Battle of Quebec, was a pivotal moment in the Seven Years’ War and in the history of Canada. A British invasion force led by General James Wolfe defeated French troops under the Marquis de Montcalm, leading to the surrender of Quebec to the British. Both commanding officers died from wounds sustained during the battle. The French never recaptured Quebec and effectively lost control of New France in 1760. At the end of the war in 1763 France surrendered many of its colonial possessions — including Canada — to the British.

(This is the full-length entry about the Battle of the Plains of Abraham. For a plain-language summary, please see Battle of the Plains of Abraham (Plain-Language Summary).)

The Troupes de la Marine (also known as the Compagnies franches de la Marine) were French regular infantry soldiers under the control of the Ministère de la Marine. Their key purpose was to defend France’s overseas colonial possessions, including New-France. These soldiers can be considered Canada’s first permanent regular army.

The War of 1812 was fought between Britain and the United States between 1812 and 1814. The war ended in a stalemate but had many lasting effects in Canada. It guaranteed Canada’s independence from the United States. It also gave Canadians their first experience working together as a community and helped develop a sense of nationhood.

(This article is a plain-language summary of the War of 1812. If you are interested in reading about this topic in more depth, please see our full-length entry War of 1812.)

The War of 1812 (which lasted from 1812 to 1814) was a military conflict between the United States and Great Britain. As a colony of Great Britain, Canada was swept up in the War of 1812 and was invaded several times by the Americans. The war was fought in Upper Canada, Lower Canada, on the Great Lakes and the Atlantic, and in the United States. The peace treaty of Ghent (1814), which ended the war, largely returned the status quo. However, in Canada, the war contributed to a growing sense of national identity, including the idea that civilian soldiers were largely responsible for repelling the American invaders. In contrast, the First Nations allies of the British and Canadian cause suffered much because of the war; not only had they lost many warriors (including the great Tecumseh), they also lost any hope of halting American expansion in the west, and their contributions were quickly forgotten by their British and Canadian allies. (See also First Nations and Métis Peoples in the War of 1812.)

This article focuses primarily on land campaigns; for more detailed discussion of naval campaigns, see Atlantic Campaign of the War of 1812 and War on the Lakes in the War of 1812. Additionally, this is a full-length entry on the War of 1812. For a plain-language summary please see War of 1812 (Plain-Language Summary).

The Seven Years' War (1756–63) was the first global war, fought in Europe, India, America, and at sea. In North America, imperial rivals Britain and France struggled for supremacy. In the United States, the conflict is known as the French and Indian War. Early in the war, the French (aided by Canadian militia and Indigenous allies) defeated several British attacks and captured a number of British forts. In 1758, the tide turned when the British captured Louisbourg, followed by Quebec City in 1759 and Montreal in 1760. With the Treaty of Paris of 1763, France formally ceded Canada to the British. The Seven Years’ War therefore laid the bicultural foundations of modern Canada.

This is the full-length entry about the Seven Years’ War. For a plain-language summary, please see Seven Years’ War (Plain-Language Summary).

The Aroostook War was a confrontation between British and Maine authorities in disputed territory known as Madawaska. During the Napoleonic Wars, Britain was in dire need of wood and the region’s pine forests became an important commodity. Claimed by both Maine and New Brunswick, Madawaska became fertile ground for confrontations between the two. The war peaked in 1838‒39 when the governor of Maine, John Fairfield, sent a group, led by Rufus McIntyre, to stop “provincials” from entering territory that Fairfield believed was Maine’s. McIntyre was captured and accused of invading the colony. The conflict ended in 1842 with the Webster-Ashburton Treaty, which divided the territory along the Saint John River.

In 1775 at the start of the American Revolution, rebel forces invaded Canada, occupying Montreal and attacking the town of Quebec. American privateers also raided Atlantic ports, and revolutionary sympathizers in Nova Scotia attempted a rebellion in that colony. Although the rebel forces were defeated in Canada, the 13 American colonies won their war for independence from Britain, sparking another kind of invasion – a wave of Loyalist emigration that would change the make-up of Canada.