The Handley Page Halifax was a four-engined heavy bomber model operated by the British Royal Air Force during World War II. The Halifax remained in service until the end of the war, performing a variety of duties in addition to bombing. It was a contemporary of the Avro Lancaster. The Halifax was also operated by the Royal Canadian Air Force, Royal Australian Air Force, Free French Air Force, and Polish forces, and after World War II by the Royal Egyptian Air Force, the French Armée de l'Air, and the Royal Pakistan Air Force.