You would like  Andrew Bacevich  who is  a retired  Vietnam combat veteran and currently  a professor of International Relations at Boston University. He has written a very thoughtful book   titled "The New American Militarism....How Americans Are Seduced By War".   His views are compelling and are informed in part by his conservative  Catholic faith. At  a personal level it is to be noted that he lose his only son in combat just a few years ago.