During the events of the Sacking of Coruscant, a specific team of Imperial soldiers found themselves designated to the initial group of shuttles making planetfall upon Coruscant.
This Imperial Army unit, made up of soldiers and including the inexperienced Hesker who lacked combat experience, was initially planned as expendable troops. Their mission was to draw the initial attacks from the Galactic Republic. Yet, Hesker, a member of the squad, was unwilling to accept being simple cannon fodder. Consequently, the Human stepped up to command the team, guiding the Imperial soldiers in breaching the Republic's defensive positions, which in turn allowed the Sith Empire to transform the conflict into a complete and utter defeat for the Republic.