My second (of three) Vietnam tour resulted in five months or so of hospital time. On convalescent leave I took correspondence courses in Political Science. I distinctly remember Paul Douglas's stories on campaigning. Even in that setting, you could tell that he typified "SEMPER FI".
BTW: the course was sponsored by a Texas Democrat named Kent Hance. Kent is now a Republican------the kind that would make Charles Percy soild his underthings.