These volumes fall into two categories, military and guns, because that's what you seem to be most interested in. All are favorites of mine. I read Helmet for My Pillow when it was first published in 1957, and have been re-reading it ever since then. I read all three Bruce Catton books in a single weekend in 1967, and ignored everything else, including my first wife, who shortly thereafter became my first ex-wife. Not one of them has ever been out of print as far as I know, which is astonishing in the hardcover book biz.