Operation Market Garden was a plan by Field Marshal Bernard Montgomery, Commander Allied Ground Forces, to bring WW2 to an end in 1944 by taking the bridges at Eindhoven, Nijmegen and Arnhem. Montgomery convinced Supreme Allied Commander Dwight Eisenhower that having achieved this the Germans would capitulate.
This 'pencil thrust' would create a corridor along which British XXX Corps would advance, supported by other formations on either flank. Having taken the furthest bridge, over the Lower Rhine at Arnhem, the way into Germany's industrial heartland of the Ruhr would be clear. It is certainly the case that success would have either achieved Montogomery's aim or significantly shortened the war.
But it was during a planning meeting prior to the operation that one of Montomery's commanders expressed his now famous opinion that "I believe it is a bridge too far"
On 17th Sept 1944 British 1st Airborne Division flew to their objective, the bridge over the Lower Rhine at Arnhem. They were to be supported by Ist Polish Independent Airborne Division.
US 101st Division was ordered to capture Eindhoven and bridges over the canals and rivers north of the town. The US 82nd Division was to secure crossings in and around Nijmegen, and hold the strategically important Groesbeek Heights to the east, which bordered German territory around Kleve.
Advancing up the road linking the bridges was far more difficult than anticipated. It was single track, elevated on a causeway, making it easy to defend. German resistance was intense. Knocked out tanks blocking the road caused the whole column to come to a halt. Days were lost.