The Fenians were a secret society of Irish patriots who had emigrated from Ireland to the United States. Some North American members of this movement were intent on taking Canada by force and exchanging it with Britain for Irish independence. From 1866 to 1871 the Fenians launched a series of small, armed incursions of Canada, each of which was put down by government forces — at the cost of dozens killed and wounded on both sides.
During the Second World War, on 19 August 1942, the Allies launched a major raid on the French coastal port of Dieppe. Operation Jubilee was the first Canadian Army engagement in the European theatre of the war, designed to test the Allies' ability to launch amphibious assaults against Adolf Hitler's "Fortress Europe." The raid was a disaster: More than 900 Canadian soldiers were killed, and thousands more were wounded and taken prisoner. Despite the bloodshed, the raid provided valuable lessons for subsequent Allied amphibious assaults on Africa, Italy and Normandy.