Well, I have an actual military issued "A" frame winch kit, BUT it is for the little truck (M37). I have used it, (lifted the rear end off the ground because I didn't have any weight in the bed) decades ago. They are a handy and a slick little accessory. Not too much work for a couple of young guys and very helpful for pulling engines, etc.
The kit, and almost all the pieces are heavy. The case that the kit comes in, with all the pieces in it, is right at the maximum for two guys to lift. Four guys lifting it means you can carry it a little ways, but not far.