Fallen bodies from the sky was an image used to reinforce what effect?

This gruesome image comes from the following passage in the book:

"Under foot there were a few ghastly forms motionless. They lay twisted in fantastic contortions. Arms were bent and heads were turned in incredible ways. It seemed that the dead men must have fallen from some great height to get into such positions. They looked to be dumped out upon the ground from the sky."

The dead men's awkward positions seem to enhance the ultimate depravity of the war. Rather than dying honorably or well, they look as though they've been tossed flippantly from the sky.