Acadian militias were units of Acadian part-time soldiers who fought in coordination with the Wabanaki Confederacy (particularly the Mi'kmaq militias) and French forces during the colonial period, to defend Acadia against encroachment by the English (the British after 1707). Some other Acadians provided military intelligence, sanctuary, and logistical support to the resistance movement. (And other Acadians remained neutral in the contest between the French–Wabanaki Confederacy forces and the British.) The Acadian militias achieved effective resistance for more than 75 years and through six wars before their eventual demise. According to Acadian historian Maurice Basque, the story of Evangeline continues to influence historic accounts of the deportation, emphasising neutral Acadians and de-emphasising those who resisted the British. While Acadian militia was briefly active during the American Revolution, the militias were dormant throughout the nineteenth century. After confederation, Acadians eventually joined the Canadian War efforts in World War I and World War II. The most well-known colonial leaders of these militias were Joseph Broussard and Joseph-Nicolas Gautier.
The first war to influence the Acadians is now known as King William's War, and began in 1688. Much of the local conflict was orchestrated by the Governor of Acadia and Baron de St Castin, who raided Protestant villages along the Acadia-New England border at the Kennebec River in present-day Maine. The crews of the French privateer Pierre Maisonnat dit Baptiste were primarily Acadian.