I think it's a Ford 011W or similar:
http://www.vanpeltsales.com/FH_web/f...1940trucks.htm
Or is it a '39?
http://www.vanpeltsales.com/FH_web/f...1939trucks.htm
and that the neg has been flipped!
There is no way I think that it's a GMC...and it would have lhd anyway! Egypt drove on the right at the time and the Alexandria-based GM Near East Limited and the Ford importer (a dealer I think; it was not a subsidiary) imported lhd vehicles only. The Ford facility imported both British, German and US vehicles, though I think that all the Cologne exports were cars (Eiffels).
I suspect that this was a captured or sequestred civvy truck. Both importers exported around the region, including to Libya. I am discounting any later than 1940 as US exports would have ceased that year.
I should add that apart from the British War Department and Air Ministry, that acquired Chevies from GM NE, the Egyptian Government also purchased vehicles. It is possible that they also had Fords but I have yet to see any printed evidence.