 Complete the following phrase:  The Second World War 19391945 began following Nazi Germanys invasion of Poland on September 1, 1939. Canadas parliament supported the governments decision to declare war on Germany on September 10, one week after the United Kingdom and France. Canadian airmen played a small but significant role in the Battle of Britain, and the Royal Canadian Navy and Canadian merchant marine played a crucial role in the Battle of the Atlantic. C Force, two Canadian infantry battalions, were involved in the failed 