The Battle of Nijmegen or Liberation of Nijmegen occurred in the Netherlands from 17 to 20 September 1944, as part of Operation Market Garden during World War II. The Allies' primary goal was to capture the two bridges over the Waal River at Nijmegen – the road route over the Waalbrug (Waal Bridge) and Nijmegen railway bridge – and relieve the British 1st Airborne Division and Polish 1st Independent Parachute Brigade at Arnhem, 10 miles (16 km) north of Nijmegen. The Allied infantry units at Arnhem were surrounded by German forces, and involved in heavy fighting for control of bridges over the Rhine.