War is HELL!  Surviving through a WAR is a struggle, when all around one the ravages of a stark reality burns on the mind.

By any means, that can help a VET to deal with the memories, finding a sense of peace is tantamount.  No soldier should be sent to the "front" on any kind of continual basis.

With Viet Nam, the soldiers at least knew that one time out, met a quicker chance of getting back "home".