 Details of the 19th Alberta Dragoons, the 21st Alberta Hussars and 23rd Alberta Rangers were placed on active service on 6 August 1914 for local protective duty.The 19th Alberta Dragoons recruited the 1st Divisional Cavalry Squadron, CEF, authorized on 10 August 1914, which embarked for Great Britain on 1 October 1914.The squadron was redesignated as A Squadron, Canadian Corps Cavalry Regiment, CEF, on 12 February 1916 and as A Squadron, Canadian Light Horse, CEF, on 21 February 1917.