In my crash crew unit we had a M893 (2 wheel drive ambulance), it was a tactical truck, and was painted camouflage. We carried our rescue gear in it. Down side is, we ended up carrying the rescue gear our selfs, because as soon as that ambulance departed the black top, it sank. The rear step was a great anchor for stopping the truck once the rear wheels started to sink.
One of the few, Frank USMC RET