A declaration of war by Canada against Germany was made by order-in-council signed by George VI, King of Canada, on 10 September 1939, seven days after the United Kingdom and France had also entered a state of war with the Nazi regime. The royal proclamation of the Canadian declaration was published in the Canada Gazette.[1]
Canadian Prime Minister William Lyon Mackenzie King announced the recommendation for a declaration of war in a radio-broadcast speech, made from Ottawa, on 3 September 1939.[2][3] The matter was then debated in Parliament, though declaration of war is a matter of the royal prerogative and does not require parliamentary approval.