- "Sir, they're slowly coming up the hill... just say when."
- — Barton to Captain Price at the start of the level, "Heat"
Barton worked with Captain Price, Gaz, Mac, Sergeant Arem, and John "Soap" MacTavish to secure the village in the campaign mission "Heat". He later fell back with the team to the barn. He escapes with the surviving members of the team at the end of the mission.