Educated at Marlborough College and Clare College, Cambridge. Enlisted into the Royal Welch Fusiliers with rank of Lieutenant, where he met Robert Graves. An exceptionally courageous officer, he developed strong pacifist opinions as the war developed, finally sending an official protest against its continuation - and act which caused him to be sent to Craiglockart Hospital , Scotland, for psychiatric treatment. Here he met Wilfred Owen and was influential in the development of Owen's work - finally being responsible for its publication after the war. One of the greatest of the First World War poets.