Cresh-3 Platoon functioned as an infantry platoon within the Galactic Empire's Stormtrooper Corps. It was one of four platoons that comprised Company Cresh. Following a period of removal from active combat for instructional purposes, Company Cresh, along with additional stormtrooper groups, was reassigned to Red Battalion. This battalion served as an Imperial cadet instructional organization for a series of training simulations lasting several days on Sirpar. In this environment, the young cadets were tasked with leading the stormtrooper units, intended to highlight the significance of both discipline and proper training. Zare Leonis, an Imperial cadet holding the rank of lieutenant, acted as the platoon's commanding officer, while Bedal Cerroux held the position of sergeant major.
In one particular training drill, Leonis himself took charge of one of the platoon's four squads, and they were instructed to act in the role of an artillery element. In this capacity, they supplied supporting fire for the remainder of the company throughout the duration of the exercise.