Army
War diaries are a day-to-day description of unit activities for army units in active service, and contain information about unit location and the military operations in which it may be involved. The diaries rarely mention individuals by name, with the exception of some references to officers.
Navy
Ship logs constitute a ship's official record, containing information about routine shipboard activities at sea and in harbour, as well as weather and sea conditions, all movements of the ship, details of operational exercises and special events such as visits by senior military personnel. Little or no personal information about individuals is entered in these records.
Air
Operations Record Books outline the activities and flying operations of a Royal Canadian Air Force unit. If the unit is an operational one (i.e., 419th Squadron), they will include details of missions flown and lists of aircraft and aircrew involved.
Research at Library and Archives Canada
First World War (1914-1918)
Army
War diaries for the Army in the First World War (RG 9 IIID3) are being digitized and can be viewed online by using the Advanced Archives Search. Records not yet digitized are available on microfilm.
Navy
Ships logs for Canada's naval vessels can be identified by using the Advanced Archives Search:
Air
Operational records for the Royal Flying Corps/Royal Naval Air Service/Royal Air Force are in the custody of the National Archives in England, formerly the Public Record Office (Military Records Information Leaflet 70 [www.nationalarchives.gov.uk/catalogue/]).
Second World War (1939-1945) and Korean Conflict (1950-1953)
References to some diaries can be located by using the Advanced Archives Search.
Army
Navy
Air