101st Airborne Division coast and strengthened the paratrooper positions, many were relieved and sent to the rear to organize for the next big paratroop operation. On 17 September 1944, the 101st Airborne Division became part of XVIII Airborne Corps, under Major General Matthew Ridgway, part of the First Allied Airborne Army, commanded by Lieutenant General Lewis H. Brereton. The division took part in Operation Market Garden (17–25 September 1944), an unsuccessful Allied military operation under Field Marshal Bernard Montgomery, commander of the Anglo-Canadian 21st Army Group, to capture Dutch bridges over the Rhine fought in the Netherlands and the largest airborne operation of
Operation Market Garden in the 82nd Airborne Division's zone, Groesbeek ridge. Seizure and defence of these hills was considered to be vital to holding the highway bridges. The plan of action consisted of two operations: Market would employ four of the six divisions of the First Allied Airborne Army. The U.S. 101st Airborne Division, under Major General Maxwell D. Taylor, would drop in two locations just north of XXX Corps to take the bridges northwest of Eindhoven at Son and Veghel. The 82nd Airborne Division, under Brigadier General James M. Gavin, would drop northeast of them to take the bridges at Grave and