"No. 30512". The London Gazette (Supplement). 5 February 1918. p. 1726. "200195 Pte. C. S. Allen, Tank Corps (Doncaster). For conspicuous gallantry and devotion to duty. He twice marked out routes under heavy enemy barrages, though on the first occasion he was blown up and badly shaken. Later he accompanied the tanks into action on foot, showing magnificent courage and contempt of danger."
