| A | B |
| Axis | The alliance of Germany, Italy, and Japan, came to be known as this, when Canada declared war on Germany. |
| Allies | Commonwealth countries (including Canada, Australia, South Africa, and New Zealand) became known as this. |
| Dieppe Raid | A raid that took place on the French coast, as an experiment. |
| Royal Canadian Navy | This group started off in 1939 with 13 ships and 1819 sailors, and then grew to 400 vessels with 100 000 sailors by 1945. |
| Battle of the Atlantic | German U-boats attempt to sink supply ships from Canada, on route for Britain, in order to starve Britain. |
| Convoys | Large groups of supply ships escorted by war ships. |
| Corvettes | Small, fast ships equipped with depth charges to explode underwater. |
| Royal Canadian Air Force | This group grew quickly after the war began and played a number of important roles, expecially in the Battle of Britain. |
| Battle of Ortona | "The Little Stalingrad", battling against Hitler's crack 1st Paratroop Division the Loyal Edmontons helped take "Vino Ridge" after nine days of fighting. |
| D-Day | "Operation Overlord" launched on June 6th 1944, in Normandy, France. This was one of the toughest battles against the Germans during World War II. |
| Holocaust | By 1945, the Germans had murdered more than six million Jews, Roma, Slavs, and other people they considered inferior. |
| atomic bomb | A weapon that uses the enormous explosive power (equivalent to 20 000 tonnes of TNT) derived from splitting the nuclei in uranium or plutonium. |