While doing some research, I came across the HyperWar website. It consists primarily of official documents produced by various agencies of the United States, United Kingdom and British Commonwealth governments. It's webpage listing sources published by the latter can be found here:
http://www.ibiblio.org/hyperwar/UN/Canada/ with sections on the Army, Navy, Air Force and even Medical Services.
I am doing some reading up on the Battle of the Scheldt in
Volume III of The Victory Campaign: The Operations in North-West Europe, 1944-1945 by Colonel C.P. Stacey, which can be found here:
http://www.ibiblio.org/hyperwar/UN/C...ory/index.html
HTH,
Hanno