This man's records are misfiled in the CLA section of WO 363 (WW1 Service Records):

Arthur Douglas CLOWES, born Birmingham.
Enlisted 10 Sept 1914, declared age 26y.
Served with the Yorks & Lancs. Regt No: 12/618. Discharged 1919.

Married Margaret Rose FRITH, 30 Oct 1916, at Ecclesall.
Son RONALD DOUGLAS born 1917. (Not named in the Record, but written on the Cover Sheet.)
Home address: Sheffield

Anc****y, CLA, pages 198085 to 198095