The QRF postwar ranges covers everything from the end of WW2, right through to the latest equipment still in current use. It is a vast category, because older tanks such as the T-55 and T-62 are still in active use in some places. The M113 was first introduced in 1962, yet is planned to continue in current service with the US Army right through to 2018, and undoubtedly will remain in service with other nations long after that.