Although supplemented by the 17-pdr, it was never entirely replaced and continued to serve in infantry units long after the war ended. The 6-pdr replaced the 2-pdr as the standard weapon in British tanks as it became available, but even as it did so, a replacement was being sought. Although HE shells were available, the limited size of charge meant they were relatively ineffective, making the 6-pdr less than ideal as a tank gun and leading to the development of the 75mm weapon used in British tanks such as the Cromwell and Churchill. The QF 6-pdr used by British airborne forces had a special carriage that allowed them to be towed as if they were light anti-tank guns.