A group of stormtroopers and scout troopers, specifically a platoon, belonged to Moff Gideon's battalion while stationed on Nevarro. Following the primary conflict in the city during the clash on Nevarro circa 9 ABY, this platoon took up a defensive position near the opening of a lava river. The entire platoon was destroyed in the resulting blast when IG-11 detonated, giving its life.
"Chapter 8: Redemption" marked the initial appearance of this platoon, with the episode's audio description explicitly identifying them as such.