This last weeknd I was at a carshow, one of the many I have at this time of year, when this older gentleman comes up to me. He was a former Marine that used to drive a M715 in Vietnam and Hawaii. He said there were very few in Veitnam mostly M37's. This we already knew. He also helped me on my markings placement. He told me that the hood numbers needed to be higher up on the hood, so they could be seen from the air. Also the Marines never used the bridge plates or the marking on the door like the army, not needed were his words, this was something I was pretty sure of and he confirmed it for me. The last thing he told me was that if the truck came from the motor pool then it was also marked in the center of the door like this:
US MARINE CORPS
890825 (numbers would be centered)
This was only used on trucks that came from the motor pool. the grunts would not use the door markings. Thought it was kinda of cool to talk to an old Marine that drove the truck in combat and knew the correct markings.