While transporting Dr. Halsey and the Spartan-IIs to the Damascus Testing Facility, the Commonwealth was engaged by a Covenant Light Cruiser, the Unrelenting. He was ordered to fire Archer Missile Pods A through F, launching 180 missiles. The Unrelenting maneuvered to avoid some missiles, but some managed to hit it. Captain Wallace congratulated the Lieutenant before realizing the missiles only struck the Cruiser's shields. After acquiring a firing solution, he fired the Commonwealth's MAC, scoring a hit on the Covenant ship, but only disabling the ship's shields temporarily. He was ordered to charge the MAC for another shot, and while the Unrelenting approached, charging a Plasma Torpedo, the second MAC was fired, shortly before the Unrelenting fired its plasma torpedo. The second MAC round managed to damage the Covenant ship. However, the plasma torpedo destroyed the MAC, and it was decided to use the ship's Shiva-class Nuclear Missile and set the proximity fuse for 100 meters. The missile had little effect on the ship, but the Covenant ship temporarily retreated. When the Unrelenting returned, it attacked the Commonwealth again, but was held off long enough and was soon destroyed by three Spartans that managed to infiltrate the ship. This maneuver cost the life of Samuel-034.
- Halo: The Fall of Reach (First appearance)