Stenner was a soldier under the command of Lieutenant Childress in the 24th SAS Regiment's H-Squadron's K Troop. Stenner fought in Operation: Shear. Stenner was part of K Troop and was involved in the fierce fighting with the Chimera at a bridge that was preventing K Troop from reinforcing Lieutenant Stephen Cartwright and the rest of H-Squadron. It is unknown whether he managed to cross the bridge and survive after it.