Armband and cap badge worn by all soldiers of the 4th Battalion CEF. The 4th Battalion was formed in Valcartier Que. in August 1914 with the 20th Halton and 36th Peel Regiments contributing 16 officers and 404 other ranks. The 4th Battalion first saw combat at Ypres in April 1915 and continued as part of the 1st Canadian Brigade for the duration of World War One.