While at the Palais Royal, on 5 June 1918, he registered for the draft (Local Board Division 169, City of NY NY, 144 St Nicholas Ave; Registration 232). He gave as his date of birth 11 September 1896; place of birth Warsaw, Russia; nationality Russian; father's birthplace Grietza, Russia; place of employment Palais Royal, 48th Street & Broadway; nearest relative Mrs Becky Ambrose, mother, 56 "Blaksley" Street, London, England. He signed as "Bert Ambrose". The registrar recorded medium height, medium build, brown hair, brown eyes and no physical disability that would render him exempt from the draft.