Desert War is an expansion for Dune: War for Arrakis that introduces new units for both the Harkonnen and Atreides factions, further detailing the harsh reality of the conflict fought on the burning surface of planet Dune.

Expert Fremen Sandriders summon giant sandworms and ride them into battle with unparalleled skill. Fremen Rocket Launchers emerge from their Fremen Camps to fire at Harversters and Ornithopters. Suspensor Troopers scout ahead to make surprise attacks, withstanding the desert hazards like few can. Escort Ornithopters not only help move Legions around but offer direct support to them in battle.