John Steakley has written a total of two books in his career thus far. Armor (1984) and Vampire$ (1991). Both books kick genre ass. Director John Carpenter even adapted Vampire$ into a movie that was enjoyable enough but doesn’t really do the book justice.
Of the two novels Armor has the deepest plotting though readers are often split on the success of the two inter-mingling plots. I enjoyed both equally. While it is superficially reminiscent of Starship Troopers that goes only as far as the relationship between the the antagonists (the aptly named Ants) and the Armored Corps.
The novel tells two separate stories that crash headlong with a pretty good pay off at the end. One of my favorite novels for quite a while.
A sequel to Armor is in the works.