Mis-filed (& badly damaged) in the CLA section of the WW1 Service Records (WO 363):

Christopher CROFT, a Steelworker, home address Middlesborough.
Married Elizabeth JONES in 1914.
Joined the Yorkshire Regt in December 1915, declared age 23y 1m. Regt No: 57678. Discharged 1919.

Anc****y, CLA, pages 118607 to 118617