Looks like an FWD SU-COE.
Chassis manufactured at their US Clintonville plant with bodies added by the Canadians at Wilson Motor Bodies. It was supplied as a GS/MAT truck and a tractor for semi-trailers.
One example of the Articulated variant here:
(Another pic there too, which the original poster has mocked up to show a trailer attached.)
From MLU - One being restored there.
(Was he definitely in the Middle east rather than Africa? I only ask as I've an article in the now defunct 'Wheels and Tracks' magazine that covers RAF MT in N Africa that may be of interest if he was there too)
Wow thanks for the info, My Uncle Fred did start off in Palestine, then did many tips up to Derna and Benghazi to deliver gas for the barrage ballons, That photo looks like it has the same front grill, amazing to see a picture.
Fred died some years ago, but his brother Charles who is 91 came to our house last week and recounted all about his experience at the battle of El Alemein, he was with in Northumberland hussars assigned as a driver working with a bofour antiaircraft gun, he had great stories to tell about life in the desert, the battle etc and he said he met up with Fred on a desert road by chance once. He he served was driving near Derna and Fred spotted his division and searched him out, they met up for a couple of hours and went ther separate ways.