Weller jumped into Normandy on June 6, 1944, the D-Day of Operation Overlord. He was then rounded up by a Colonel to go to Ramelle under the command of Captain Jennings, who was eventually killed in the bombings.
When Miller's Squad came to Ramelle, Weller asked Rice what was going on, and Rice explained that Private Ryan just found out his three brothers were killed. When Captain Miller took control, he began to make "sticky bombs" to prepare for the incoming German attack.
When they did arrive, he hid in a building with Wilson and proceeded to drop Molotov cocktails on a Marder III, and then attacked the crew within a German Tank. He was then wounded by a 20mm Flak shell explosion along with Lyle. He tried crawling to safety only to be shot in the back by a German Soldier, killing him.