World War II: Operation Jubilee (The Dieppe Raid): The 2nd Canadian Infantry Division leads an amphibious assault by allied forces on Dieppe, France and fails.

World War II or the Second World War was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks and aircraft played major roles, enabling the strategic bombing of cities and delivery of the first and only nuclear weapons ever used in war. World War II is the deadliest conflict in history, causing the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

Operation Jubilee or the Dieppe Raid was a disastrous Allied amphibious attack on the German-occupied port of Dieppe in northern France, during the Second World War. Over 6,050 infantry, predominantly Canadian, supported by a regiment of tanks, were put ashore from a naval force operating under the protection of Royal Air Force (RAF) fighters.

The 2nd Canadian Division, an infantry division of the Canadian Army, was mobilized for war service on 1 September 1939 at the outset of World War II. Adopting the designation of the 2nd Canadian Division, it was initially composed of volunteers within brigades established along regional lines, though a halt in recruitment in the early months of the war caused a delay in the formation of brigade and divisional headquarters. With questions concerning overseas deployment resolved, the division's respective commands were formed in May and June 1940, and at British Prime Minister Winston Churchill's request, the division was deployed to the United Kingdom between 1 August and 25 December 1940, forming part of the Canadian Corps.