sentences:  It remained in Iraq for 19 years, on occasion flying "Air Policing" operations against rebelling tribesmen.The ageing DH.9As were replaced by Westland Wapitis in February 1930, which in turn were replaced by Vickers Vincents in 1937, taking these to RAF Habbaniya in September that year.It finally received modern monoplanes in March 1939, when it received twin-engined Bristol Blenheim bombers, transferring to Egypt just before the outbreak of the Second World War.