I posted a 1/4 ton trailer that had been modified for special use.
Here are a couple of M880 series trucks that basically had tar an wood additions on the back of them. These belonged to the 708th Maintenance Bn. / 8th Infantry Division in Germany around 1982. These generally would have been frowned upon in stateside units that would have been subject to air or sea deployment.
Not the best photos, but I will post more as I find them.
Note the corrugated tin overhang over the windshield.