File consists of 5 reels of microfilm that contains the full war diary for the Cape Breton Highlanders World War II service.

Unit war diaries were submitted monthly by units and chronicled the daily activities of the unit. In addition to the monthly diary were appendices that consisted orders and instructions issued during the month as well as other information of worth. The diaries cover the periods as follows:
1.) August 26, 1939 - January 31, 1943
2.) February 1, 1943 - October 31, 1943
3.) November 1, 1943 - August 31, 1944
4.) September 1, 1944 - August 31, 1945
5.) September 1, 1945 - January 26, 1946