Dad was a combat engineer from North Africa to the Brenner Pass. He said that on long motor moves his outfit used to put the very large cans (your super market deli counter may still get them: they are about 5x5x20 inches) on the engine blocks of their deuce-and-a-halves to heat them up. These plus the number ten cans of fruit cocktail fed a lot of guys. Boredom with this menu probably led one of the guys in his outfit shoot a cow in the Bey of Algiers' prize herd. Yes, it did hit the fan.
Thanks for making me rememebr this story.
Bob