From https://internationalbrigadesinspain.weebly.com/british-battalion.html

Esmond Marcus David Romilly: born 10/06/1918. At the outbreak of the Spanish Civil War Romilly bicycled to Marseille and joined the International Brigades. Romilly and 15 other Englishmen were attached to the German Thaelmann Battalion (12th International Brigade) Fought in a machine-gun section in the defence of Madrid. By December 1936 all but three of the English group had been killed or seriously wounded. The following month, suffering from dysentery, he was sent home. In February 1937 he returned to Spain as a journalist with the News Chronicle. Romilly wrote 'Boadilla', an account of his experiences in the Spanish Civil War. He served in the Royal Canadian Air Force during WW2. Shot down over the North Sea on 30/11/1941 during a bombing raid over Germany. He was 23.