The airborne assault over the Rhine (Operation Varsity), was the largest single airborne operation in the history of airborne warfare and also involved the U.S. 17th Airborne Division. Five battalions of the Parachute Regiment in the 6th Airborne Division took part. The first unit to land was the 3rd Parachute Brigade (8th, 9th and 1st Canadian Battalions). The brigade suffered a number of casualties as it engaged the German forces in the Diersfordter Wald, but by 11:00, the DZ was almost cleared of German forces. The key town of Schnappenberg was captured by the 9th Battalion in conjunction with the 1st Canadian Battalion. Despite taking casualties, the brigade cleared the area of German forces, and by 13:45, the brigade reported it had secured all of its objectives.