Christopher Robin Milne is the son of an author who held what rank in the British Home Guard?
Christopher Robin Milne: Christopher Robin Milne (21 August 1920 – 20 April 1996) was the son of author A. A. Milne. A. A. Milne:  Milne served in both World Wars, joining the British Army in World War I, and was a captain of the British Home Guard in World War II.
captain