The King's Own Calgary Regiment (Royal Canadian Armoured Corps) was split off in 1920 the 103rd Regiment (Calgary Rifles) raised on 10 April 1910 at Calgary, Alberta. The regiment was reorganized on 15 March 1920 as two separate regiments, The Alberta Regiment (now The South Alberta Light Horse) and The Calgary Regiment as part of the Otter Committee reorganizations. On 15 May 1924, The Calgary Regiment was again reorganized and split into two separate regiments, The Calgary Regiment (now The King's Own Calgary Regiment) and The Calgary Highlanders.