- 4 Dec 1915 authorized to stand up
- LCol Duncan Commanding Officer
- Jan 1916 recruiting commences with 1200 on strength by 22 Feb
- Billeted at CNE Horticulture building barracks
- 16 May Bn moves to Camp Niagara and from there to Camp Borden
- LCol Miller new CO and Maj Allan DCOList of Bn Officers and NCOs (including their eventual fate) p. 415 Regimental history
- 5 Aug 1916 depart Borden for Halifax arriving 8 Aug
- Depart Halifax onboard SS Scotian escorted by HMS Carnarvon
- 18 Aug arrive in UK and move to Bramshott scheduled for 5th Div
- Decision to made to send a 350 man reinforcement draft to the 15th Bn on 7 Oct
- Bn moves to Whitley Camp Surrey 1 Nov and 22 Jan 1917 is posted to the new 5th Cdn Div
- More reinforcement drafts taken from the Bn: 378 – 19th and 117 – 3rd in May; 100 – 15th Feb 1918
- 12 Feb 1918 decision made to demobilize the 5th Div and the remaining Bn is broken up into 3 x 100 man reinforcing drafts to each of 4th Bn, 4CMR and the 15th Bn
- The battalion provided reinforcements to the Canadian Corps in the field until 7 March 1918, when its personnel were absorbed by the ’12th Reserve Battalion, CEF
