Walter Frank Bail's army records say he attested on 9th January 1917, gives his date of birth as 4th February 1899 so he was nearly 18 when he joined up.
Gives his next of kin: Clara Ester Bail, mother, 59 Brandenburg Road, Fulham.
Walter didn't have any overseas service, he was discharged 6th March 1918, no longer physically fit for service.