Robert;
Bit of a follow-up:
Regarding Korea, the history of the RCASC mentions that the US pattern vehs that were issued to No. 54 Transport Company, RCASC and No. 38 Motor Ambulance Company, RCASC, were of WWII vintage. Also, I think if Art Johnson happens to read your post, he could probably give you a definite answer on the use of the WC 54 Dodge Ambulance by the Cdn Forces in Korea. Over to you Art.............
Regarding use by Cdn Forces in peacekeeping operations, the attached picture is of the Cdn Forces vehicles bound for UNEF on board H.M.C.S. Magnificent (1956/57), the two ambulances pictured are not WC 54's and I can't remember their proper name at the moment, just remember them by "3/4 Ton Box Ambs". So I doubt that Cdn Forces ever used WC 54's on peacekeeping ops.
Anyways, that's my 2¢ worth.
Cheers