It's a white soldier standing in front of a vehicle pulling a cannon.
He's wearing shorts, so it must be hot. I would place him in the Mediterranean, possibly Italian.
The vehicles are very old, which doesnt necessarily mean they were old at the time of the picture. They are circa 1920's vehicles, but could have still been in use in WWII.
The artillery piece look austrian or german to me.
If I had to guess I would say it was an italian soldier towing some german artillery circa 1940.
