The Confederates prepared a road block and an ambush at a point between Lake Aegeri and the Morgarten Pass where the narrow path led between the steep slope and a swamp. When the Austrian army entered the ambush, the Confederates attacked from above with rocks, logs and halberds. The knights had no room to defend themselves and suffered a crushing defeat, while the foot soldiers in the rear fled back to the city of Zug. About 1,500 Habsburg soldiers were killed in the attack.