That is closer to a full sz shovel, but an entrenching tool is better than nothing.... weren't Jeeps phased out in the 80s for HMMWVs ?? I was in 72-75 and don't really recall seeing any, although in the Army I was stationed on an AFB and we used Dodge Trucks... guess the Ground Pounders didn't trust us Aviators with their tactical utility vehicles !!!
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I was in Germany until '85. We were transitioning to the new TO&E, which included M1 Abrams, Bradleys, and HMMWV replacing the M151A1.
The trucks you reference are probably "CUCV's." Before the HMMWV's were in production, the military needed light vehicles and didn't want to buy more M151A1's, which being purpose-built were quite expensive. So they speced out diesel pickups (Dodge, then GM) to replace the Gama Goat (an expensive failure) and the Mutt.
We used M151A1's along the East/West German border. They were soft tops, with pintle mounts for a .50 cal (not usually installed). They had large radios because we needed long range. Without the big radio a couple guys could often get them unstuck. If someone had "Augered in" we would usually get a [tracked] M113A1 to pull them out. And in deep snow the M113's were far superior.
We carry Etools in all our vehicles, including snowmobiles. They are obviously not the best shovels but never get left behind because of their small folded size. It just takes motivation.
Four wheelers get stuck in the NH neighborhood regularly. We have the technology.....