He is sooo full of Shit! We had the same thing during Nam days, and those sheets were by far more that sufficient.
If one is stuck eating rations for more than a week, your excrement is dry, so much so, that you actually  don't even need to wipe.

Army issues the suckiest boxers known to man, we all wore two in the event the mess hall served something that didn't agree, so you actually had a ready set of TP if needed.