Question: Who did Sir Stuart Peach replace as Chief of the Defence Staff in the summer of 2016?
Sentence (from "Nick Houghton"): General Sir John Nicholas Reynolds "Nick" Houghton, {'1': ", '2': ", '3': ", '4': "} (born 18 October 1954) is a retired senior British Army officer and former Chief of the Defence Staff of the British Armed Forces.
Relevant evidence: Yes