Residual Canadian Mounted Rifle Units:
The 8th to 13th CMR were all assigned as reinforcements, details of which we can summarize from the information in Love and Stewart:
7th CMR: Raised in London from the Governor General's Body Guard, the 9th Mississauga Horse and the 1st Hussars. The battalion (less "A" Squadron) formed the Canadian Mounted Rifle Depot in England. "A" Squadron was reorganized in Canada as the 2nd Divisional Cavalry Squadron.
8th CMR: Raised in Ottawa from the 4th Hussars. This battalion was later broken up to provide for reinforcements in the field. The unit was raised on March 15, 1915 and disbanded on November 15, 1920.
9th CMR: Raised in Lloydminster from the 22nd Saskatchewan Light Horse. This battalion was later broken up to provide for reinforcements in the field. The unit was raised on March 15, 1915 and disbanded on November 15, 1920.
10th CMR: Raised in Regina and Portage La Prairie from the 22nd Saskatchewan Light Horse. This battalion was later broken up to provide for reinforcements in the field. The unit was raised on March 15, 1915 and disbanded on November 15, 1920.
11th CMR: Raised in Vancouver form the 30th Regiment, British Columbia Horse. This battalion was later broken up to provide for reinforcements in the field. The unit was raised on March 15, 1915 and disbanded on November 15, 1920.
12th CMR: Raised in Calgary form the 15th Light Horse. This battalion was later broken up to provide for reinforcements in the field. The unit was raised on March 15, 1915 and disbanded on November 15, 1920.
13th CMR: Raised in Pincher Creek from the 21st Alberta Hussars. This battalion was later broken up to provide for reinforcements in the field. The unit was raised on March 15, 1915 and disbanded on November 15, 1920.