Complex sentence: Air Marshal Sir Harold John Maguire, KCB, DSO, OBE, (12 April 1912--1 February 2001) was Director-General of Intelligence at the Ministry of Defence from 1968 to 1972.
Split into simpler sentences: Air Marshal Sir Harold John Maguire, (12 April 1912--1 February 2001) was a senior Royal Air Force officer and public servant. He was Director-General of Intelligence at the Ministry of Defence from 1968 to 1972.