Sardaukar

The Sarsaukar were the official military and police forces of the Milky Way Imperium. They used starships of the Spacing Guild for interstellar travel, but had their own infantry, artillery, special forces, armored, and slower-than-light spaceship units.

The Sardaukar were feared by many rebels and criminals in the Milky Way Galaxy, and were similar to Palpatine's stormtroopers.