Regiment

A regiment was a large ground infantry unit. In the Grand Army of the Galactic Republic, each corps consisted of sixteen regiments of 2,304 clone troopers led by their respective Clone Commanders, with each divided into sixteen companies. A single Republic regiment was composed of four battalions, and furthermore, those battalions were made up of four companies. During the First Battle of Geonosis, Yoda's regiment saved Senator Padmé Amidala and the Jedi from the Petranaki Arena. The Confederacy of Independent Systems's Droid Army also made use of regiments, and several regiments were part of the Hissrich droid unit.

In the Stormtrooper Corps, a regiment consisted of four battalions, giving one a total of 3,200 stormtroopers. A legion consisted of four Imperial regiments. According to Rebel General Crix Madine, Imperial regiments were known for their lockstep obedience. Imperial Army troopers could be organized into a regiment.