I’m not into military science fiction. Hammer’s Slammers? I’ve heard of it. Honor Harrington? Never read it. Some guy named Marko Kloos got into some sort of spat. A distaste for open-ended series accounts for more than a bit of my aversion, though, so if I’m going to dip my toe into the subgenre, it’s through standalone books. The three milSF books that everyone should read, so I’m told, are Starship Troopers by Robert Heinlein, The Forever War by Joe Haldeman, and Armor by John Steakley.