| Regimental number | 2209 |
| Date of birth | |
| Place of birth | Millicent, South Australia |
| School | Norwood Public School, South Australia |
| Religion | Methodist |
| Occupation | Grocer's assistant |
| Address | Beach Road, Grange, South Australia |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, Mr Phillip Richard Lock, Beach Road, Grange, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 50th Battalion, 4th Reinforcement |
| AWM Embarkation Roll number | 23/67/3 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A70 Ballarat on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 43rd Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brother: Lionel LOCK, HMAS 'Australia' |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |