 Complete the following phrase:  Field Marshal Sir Richard Amyatt Hull, 7 May 1907  17 September 1989 was a senior British Army officer. He was the last Chief of the Imperial General Staff 196164 and the first Chief of the General Staff 196465, and, as such, the professional head of the British Army. He later became Chief of the Defence Staff 196567, the professional head of the entire British Armed Forces. He served with distinction during the Second World War, fighting from 1942 to 1945 in 