There is much to military training
that may seem childish, stultifying, and even
brutal. But one essential part of breaking
men into military life is the removal of
misfits — and in the service a man is a
misfit who cannot obey orders, any
order, and who cannot stand immense
and searing mental and physical pressure.

For is own sake and for that of those
around him, a man must be prepared for
the awful shrieking moment of truth
when he is alone on a hill ten
thousand miles from home, and that he
may be killed in the next second.

T.R. Fehrenback
This Kind of War