Mis-filed in the SCO section of the WW1 Service Records (WO 363):

Arthur DUGDALE, home address CLAYTON LE MOORS, Lancs. Born July, about 1883.
Parents: Arthur & Elizabeth Ann.
Married December 1907. Children: Harry (b1909) & Jack (b1916).
A Baker by trade, enlisted at Preston, February 1917. De-mobbed 1919.

Anc****y, SCO, pages 29932 to 29943