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

George Ritchie DICKSON; home address HAMILTON (Scotland); father's initial A.
Enlisted Nov 1915, declared age 28y 11m. Regt. No. 203663 (RGA).
De-mobbed 1919.

Anc****y, CLA, pages 133781 to 133794 & 133807 to 133810