I cannot get a ED Ward as in Numeric Register as "Lancs". The evidence pushes me towards "Ernest Deen Ward" in Tanks
1882 Sep 6. . Born Exeter, Devon
1891 census at Raymond Road, West Ham, Essex, England
1899 Jun 14 Attests Devon Militia. He is a "gentleman's servant"
1899/1901 In South Africa in Bethunes Mounted Infantry, Rank: Trooper, Number: 1563
1906 Marriage to Ada Louise Harriet Jenkins Age: 24 York, Ontario, Canada
1917 Dec 20 Commissioned 2nd Lt
1919 Mar 30 . Arrived in New York from UK. And almost immediately took out US citizenship
1920 Dec 17. Tank Corps. (Engr. Branch.) Temp. 2nd Lt.E. D. Ward relinquishes his commission on completion of service, and retains the rank of 2nd Lt
1921 Feb 27. An Ernest Ward arrives in UK from USA, where he has been living. He is an Engineer and UK address of 275 Katherine Rd, Forest Gate, London
1921 Jun 8. Joined ADRIC with service no 2033. Posted to L Coy
1922 Jan He appears to serve until demobilisation of ADRIC
1939 Oct 6. Marriage to Gertrude May King Age: 57 Register Office, Staines, Middx
1939 Register Living at 1 Hyde Way , Hayes and Harlington U.D., Middlesex. With wife Gertrude: he is a "General Engineer Super"
1948 Jul 13. His wife, Gertrude May Ward, died in Whitstable
1951 Nov 16. Died in Bridge, Kent,