1914
When Great Britain declared war, Canada was automatically at war because it was part of the British Empire. Through most of the first year of the war, however, Canada had to work just to muster, organize, and train a war ready army.
Assassination of Archduke Ferdinand: 28 June 1914 Outbreak of the First World War: 28 July 1914 Schlieffen Plan and Plan XVII: Aug 1914 Canadian Mobilization: Aug. 1914. Formation of the Canadian Automobile Machine Gun Brigade No. 1: Sept. 1914 First Canadian Contingent Embarks for Europe: 12-16 Oct 1914 Canadian Contingent Kept Intact: 12-16 Oct. 1914.