This is a Hot Wheels truck. It started life as an army deuce and a half.
At some point they made it into a delivery truck too. I have seen at least one other version in a different color, I think it was some kind of snow or winter related truck.
Other than the color and markings it is exactly the same truck as they always did.
It fits well in size and design with the Roco 2 1/2 ton Army truck. So I have a bunch of them. It pays to keep your eyes open when visiting the toy department of you local store, sometimes you find something very interesting. A quick re-paint and this old war horse could be carrying soldiers off to the front again.