Beetle Bailey, 5/27/22

I'm trying to figure out what "cave" would even mean in this context, in which they've clearly all been marching so long that it's not like turning around and going back would do any good. Does "cave" mean ... dying? Is Sarge going to march his soldiers out to the desert, to die, scolding them for dying all the while? You have to admit that this would be an extremely metal way for Beetle Bailey to end.

Hi and Lois, 5/27/22