As to question two about suicide and the military. This link is about a young man I knew well. The article does not mention the cause of death but he killed himself a year ago. I won't go into too many details because I don't want to hear about how others in other wars were able to handle things. I know his mother and her heart is broken, a letter can't bring her son back but it would show that the military acknowledges that there are problems.
http://themountainmail.com/main.asp?SectionID=4&SubSectionID=4&ArticleID=19303