The grenade trooper, alternatively named the thermal detonator trooper, represented a ground unit classification utilized by the Alliance to Restore the Republic throughout the duration of the Galactic Civil War. These mortar troopers were strategically placed away from the immediate fighting, and were crucial in battles due to their provision of support fire at medium distances for fellow Rebellion soldiers, achieved through the firing of both mortars and thermal detonators. They fought with Princess Leia Organa in the Krantian Civil War. Subsequently, as members of the New Republic, they participated in the Liberation of Coruscant, fighting together with Han Solo and Rand Talor.