The brigade's next operation was scheduled for early September 1944. Codenamed Comet, the plan called for the 1st Airborne Division's three brigades to land in the Netherlands and capture three river crossings. The first of these was the bridge over the River Waal at Nijmegen, the second the bridge over the River Maas at Grave and finally the River Rhine at Arnhem. The objective of the 4th Parachute Brigade would be the bridge at Grave. Planning for Comet was well advanced when on the 10 September the mission was cancelled. Instead, a new operation, Market Garden, was proposed whose objectives were the same as those of Comet but would this time be carried out by three divisions of the 1st Allied Airborne Army.