Source Information Canada, Records of British Military Headquarters, 1775-1856 [database on-line]. Provo, UT, USA: Operations, Inc., 2013.
Original data:

Records of Military Headquarters in Canada, 1776–1881. WO 28/2–10, 268–269, 303–317. Records of the Armed Forces from commands, headquarters, regiments and corps. Records created or inherited by the War Office, Armed Forces, Judge Advocate General, and related bodies. The National Archives, Kew, Surrey, England.

About Canada, Records of British Military Headquarters, 1775-1856

This database contains images of letters, returns, and memorials from field officers and military departments in Canada, as well as general orders issued in the Canada and Nova Scotia Commands. These documents can contain names, dates, locations, and other details and relate generally to the American Revolution, the War of 1812 and the early decades of the 19th century.

These records can be browsed by region and title.