The Stormtroopers are soldiers from George Lucas' Star Wars universe. They are the main ground-force of the Galactic Empire, under the leadership of Emperor Palpatine and his commanders, most notably Darth Vader and Grand Moff Tarkin. They are also the main ground-force of the First Order, under the leadership of Supreme Leader Snoke and his commanders, most notably Kylo Ren and General Hux. The order of battle of the Stormtrooper Corps is unspecified in the Star Wars universe, but its numbers are far fewer than those of the Imperial Army's regular troopers. Despite this, the apparently high combat effectiveness of the Stormtroopers as well as their harsh reputation serve as the main reasons for deploying them almost exclusively in most of the military engagements of the Galactic Empire.
They are shown in collective groups of varying organizational sizes ranging from squads to legions, and for some, their armor and training is modified for special operations and environments.