Operation Varsity a veteran division; it had taken part in Operation Overlord, the assault on Normandy in June the previous year. However, the U.S. 17th Airborne Division, under Major General William Miley, had been activated only in April 1943 and had arrived in Britain in August 1944, too late to participate in Operation Overlord. The division did not participate in Operation Market Garden. It did, however, participate in the Ardennes campaign but had yet to take part in a combat drop. The U.S. 13th Airborne Division, under Major General Eldridge Chapman, had been activated in August 1943 and was transferred to France
6th Airborne Division advance to the River Seine heavy anti-aircraft artillery regiment used in a field artillery role. In the operation the 6th Airborne Division together with the 7th Armoured Division, the 49th (West Riding) Infantry Division and the 51st (Highland) Infantry Division, formed the I Corps, attached to the First Canadian Army. When issuing his orders, Lieutenant General John Crocker, the Corps commander, aware that the 6th Airborne had almost no artillery, vehicles or engineer equipment, did not expect them to advance quickly. To reach the River Seine the division would have to cross three main rivers, along only two main lines of advance. One route was