These photos appeared on Facebook, though some have made the rounds over the years. The pics that really caught my eye were the wooden test body pics. Kaiser Willys has some history and more pics on these wood-bodied test jeeps: https://blog.kaiserwillys.com/the-wooden-willys-jeep-test.
The remainder of the wrecked jeeps:
Photo number 10 shows the wrecked Jeep with Lieutenant General placard. Anyone know who this might have been?