"Royal Air Force Operations in the Middle East and North Africa, 1939-1943." A Vickers Valentia of No. 216 Squadron RAF based at Heliopolis, Egypt, at the landing ground at H4 pumping station on the Iraq Petroleum Company pipeline in Transjordan. Arab Legionnaires stand guard as personnel and supplies are unloaded at H4, which had become the RAF Advanced Headquarters for operations against the rebels in Iraq.