First Allied Airborne Army divisions were initially chosen to take part in Varsity: the British 6th Airborne Division, the US 13th Airborne Division and the US 17th Airborne Division, all of which were assigned to US XVIII Airborne Corps. One of these airborne formations, the British 6th Airborne Division, was a veteran division; it had taken part in Operation Overlord and the assault on Normandy. However, the 17th Airborne Division had only been activated in April 1943 and had arrived in Britain in August 1944, too late to participate in Operation Overlord. The division had also been absent from Operation Market-Garden, and the only
1st Airborne Task Force (Allied) land simultaneously in Normandy and in southern France in June 1944, attacking the Germans from the north and south in a classic pincer movement, after which the southern forces would head east to aid Allied forces in Italy. However it was soon realized that there were not enough landing ships or men available to carry out both operations at the same time, so the southern invasion ("Operation Anvil") was postponed. The southern invasion (now "Operation Dragoon") was planned for August 1944, and all airborne forces were allocated to a new unit formed on 11 July 1944 as the Seventh Army