 Steel Gauntlet

Steel Gauntlet is the third novel of the military science fiction StarFist Saga, written by David Sherman and Dan Cragg.In "Steel Gauntlet", St. Cyr, a maniacal sadist who has reinvented the doctrine of armored warfare has taken control of the planet Diamunde, and 34th FIST is deployed as part of a larger force in a full-scale war to remove him from power.