I have two of these 1940 1/2 Ton utilities plus a 1939 3/4 Ton. They are all in rough shape.
The Army here were issued with many of these 1940 to 1941 Chevrolet trucks. Units of the Army were sent to the Middle East in 1940. Many of the Chevrolet vehicles were shipped to Egypt and a few managed to return to Australia.
This pic is in Syria in 1942. It's a 1 Ton General Service van, 17" wheels.
The GM-H built utility (pickup) bodies were a wooden frame with metal panels attached to the wood. The mechanical parts were made in Oshawa, Canada . Canada being in the British Empire, had trade concessions with other Commonwealth countries - Australia, New Zealand.
1940 Canadian Chevrolet Series 13 (1/2-t) utility (Australian) Lots of history here! Read ot all in the DITY