MCPHAIL, John L - fraudulent enlistment WW1

[fullscott]

This man signed up as George MARSHALL, and so is mis-filed in the WW1 Service Records (WO 363):

John L McPHAIL (name checked from marriage bmd, probably John Lachlan, b1890) joined the Yorkshire Regiment on 25 November 1915, declaring age 25y, name George MARSHALL.
He deserted on 8 January 1916. Regt No: 25668.

Home address: New Wortley, LEEDS
Married Mary HARWOOD at ARMLEY, December 1914
Son: John Lachlan McPHAIL (noted as illegitimate, but probably not) b April 1915
Aunt: Alice HUNTER

Anc****y, MAR, pages 16137-16148

[christanel]

Is this the same man joining up under his own name. I can't access the original image as it is in Fold3 on ancestry.
UK, Royal Air Force Airmen Records, 1918-1940
John Lachlan Mcphail
Age: 27
Birth Date = 1890
Service Date -17 Jan 1918
Service Number - 119773
Spouse - Mary Mcphail
Next of Kin - Mary Mcphail
Relation to Airman - Wife

Christina

Edited to add:- the image of the RAF record is on Findmypast also and his address is New Wortley Leeds.