17th Airborne Division (United States) Standish on 12 August 1944 before departing Boston Port of Embarkation on 20 August 1944. The 17th Airborne Division arrived in the United Kingdom on 26 August. Once in Britain the division was attached to U.S. XVIII Airborne Corps, under Major General Matthew Ridgway, which commanded all American airborne formations, and which in turn became part of the First Allied Airborne Army when it was formed on 21 August, under the command of Lieutenant General Lewis H. Brereton. Although attached to XVIII Airborne Corps, the division was not chosen to participate in Operation Market Garden, a large-scale airborne operation intended
1st Airborne Division (United Kingdom) same objectives as "Comet" but to be carried out by three divisions of the First Allied Airborne Army. Operation "Market Garden" was an airborne assault by three divisions in the Netherlands in September 1944, including the British 1st and the American 82nd and 101st, to secure key bridges and towns along the expected Allied axis of advance. Farthest north, 1st Airborne, supported by the 1st Polish Parachute Brigade, landed at Arnhem to secure bridges across the Nederrijn. Initially expecting an easy advance, XXX Corps, under Lieutenant General Brian Horrocks, to reach the airborne force at Arnhem within two to three