Execute Battalion was a clone trooper battalion of the 501st Legion in the armed forces of the Galactic Republic that fought during the Clone Wars, and was part of a group of three brigades. During the Battle of Devaron, members of Execute Battalion were ordered by Clone Captain Rex to man the AT-TE designated ATAT300 in order to board a Separatist Munificent-class star frigate under the command of the bounty hunter Cad Bane.