39th (Eastern Ontario) Battalion, CEF Cap Badge The 39th Battalion, CEF, was an infantry battalion of the Canadian Expeditionary Force during the Great War. The 39th Battalion was authorized on 7 November 1914 and embarked for Great Britain on 17 June 1915. It provided reinforcements to the Canadian Corps in the field until 4 January 1917, when its personnel were absorbed by the 6th Reserve Battalion, CEF. The battalion was subsequently disbanded on 17 July 1917. The 39th Battalion recruited in Eastern Ontario was mobilized at Belleville, Ontario. The 39th Battalion was awarded the battle honour THE GREAT WAR 1915-17 and is perpetuated by The Hastings and Prince Edward Regiment.