A. E. Snell has written: 'The C.A.M.C. with the Canadian Corps during the last hundred days of the Great War' -- subject(s): Canada, Canada. Canadian Army. Royal Canadian Army Medical Corps, Medical and sanitary affairs, World War, 1914-1918
Cfn is the acronym for Craftman, a soldier serving in the Royal Canadian Ordnance Corps or Royal Canadian Electrical and Mechanical Engineers in WW2.
Marine Corps War Memorial was created in 1954.
Marine Corps War College was created in 1991.
Canadian War Museum was created in 1880.
The Reconnaissance Corps was created in 1941 during World War II by the British Army. It was established to fulfill the need for specialized units that could gather and provide information on enemy positions, movements, and intentions. The corps played a crucial role in reconnaissance and intelligence gathering throughout the war.
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Dieppe Canadian War Cemetery was created in 1942.
Groesbeek Canadian War Cemetery was created in 1945-02.
The Canadian Military Police Corps was formed in 1917, to control road movements of troops and supplies in France, during the Great War. It was dis-banded in 1919. In June of 1940, the Canadian Provost Corps was "stood up " and authorised by an Order in Council of the Canadian Parliament. In 1968, the Canadian Armed Forces absorbed the CPC into the new Canadian Forces Military Police service .
This was the big push during the last 3 months of World War I by the allies. German forces were withdrawing rapidly (for World War I) in the face of the drive. The term is usually used in relation to the fighting involving the Canadian Corps.
If you mean for military use then one (1). It was never used in combat. Please see the wikipedia article about the Canadian Aviation Corps.