| Regimental number | 1236 |
| Place of birth | Colac, Victoria |
| Religion | Methodist |
| Occupation | Coach builder |
| Marital status | Single |
| Age at embarkation | 19 |
| Height | 5' 4.5" |
| Weight | 138 lbs |
| Next of kin | Father, John Fleming Ballagh, nr Colac, Victoria |
| Previous military service | Served for 2 years in the Cadets; 2 years in the 20th Light Horse Regiment, Citizen Military Forces. |
| Enlistment date | |
| Place of enlistment | Colac, Victoria |
| Rank on enlistment | Private |
| Unit name | Signal Company Engineers Reinforcement 4 |
| AWM Embarkation Roll number | 22/11/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A9 Shropshire on |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 4th Divisional Signal Company |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 2324 Pte James Lewis BALLAGH, 2nd Pioneer Bn, returned to Australia, 4 June 1919; 6617 Pte William Fleming BALLAGH MM, 7th Bn, returned to Australia, 12 June 1919. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Name does not appear on Embarkation Roll. |