In the late evening of December 7, 1941, the Canadian Prime Minister, W. L. Mackenzie King, announced the Cabinet's decision to declare war on Japan. The King approved Canada's declaration of war in the following proclamation issued on December 8, 1941.
Whereas by and with the advice of our Privy Council for Canada we have signified our approval of the issue of a proclamation in the Canada Gazette declaring that a state of war with Japan exists and has existed in Canada as and from the 7th day of December, 1941.
Now, therefore, we do hereby declare and proclaim that a state of war with Japan exists and has existed as and from the seventh day of December, 1941.
Of all which our loving subjects and all others whom these presents may concern are hereby required to take notice and to govern themselves accordingly.