| Regimental number | 4809 |
| Place of birth | Nailsworth South Australia |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | North Adelaide, South Australia |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, Thomas Kilmartin, 62 Barton Terrace, North Adelaide, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 32nd Battalion, 13th Reinforcement |
| AWM Embarkation Roll number | 23/49/3 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A30 Borda on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 43rd Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 2350 Lance Corporal Francis Thomas Joseph KILMARTIN, 48th Bn, killed in action, 8 June 1917; 12199 Gunner Denis KILMARTIN, 5th Field Artillery Brigade, returned to Australia, 29 May 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |