Operation Pegasus launched Operation Market Garden, an attempt by the British 2nd Army to bypass the Siegfried Line and advance into the Ruhr, Germany’s industrial heartland. The operation required the First Allied Airborne Army to seize several bridges over rivers and canals in the Netherlands, allowing ground forces to advance and cross the Lower Rhine at Arnhem. The 1st British Airborne Division dropped onto Arnhem on 17 September. They encountered far greater resistance than had been expected and only a small force were able to reach Arnhem road bridge. XXX Corps ground advance became delayed and without reinforcement this small force under
1st Airborne Division (United Kingdom) Infantry Division, the US 101st Airborne Division, and the 1st Polish Parachute Brigade landing at Rambouillet St Arnoult, to close the gap between Orléans and Paris. Operation "Axehead", using the same force, was to seize the bridges over the River Seine in support of 21st Army Group. Operation "Boxer", with the same force, was to seize Boulogne and assault V1 flying bomb sites. Near the end of the month, Operation "Linnet", with the same units as before, was formulated to seize crossings over the Escaut. Operation "Infatuate", drawn up in early September, involved the entire I Airborne Corps landing in