| Regimental number | 6815 |
| Place of birth | Clare, South Australia |
| Religion | Roman Catholic |
| Occupation | Grocer |
| Address | Clare, South Australia |
| Marital status | Single |
| Age at embarkation | 21.4 |
| Height | 5' 1.25" |
| Weight | 112 lbs |
| Next of kin | Father, T P Gillen, Clare, South Australia |
| Previous military service | Served for 2 years in the Cadets. Previously rejected for AIF enlistment on account of height. |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Clare, South Australia |
| Rank on enlistment | Private |
| Unit name | 27th Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/44/5 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 48th Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Western Front Embarked Melbourne, 30 January 1917; disembarked Devonport, England, 27 December 1917. Proceeded overseas to France, 1 April 1918; taken on strength, 48th Bn, in the field, 6 April 1918. Reported missing in action, 3 May 1918. Now, 4 June 1918, reported prisoner of war in Germany. Repatriated from Germany,arriving England 28 November 1918. Commenced return to Australia on board HT 'Nevasa' 18 May 1919; disembarked Adelaide, 15 April 1919; discharged (termination of period of enlistment), 18 May 1919. Medals: British War Medal, Victory Medal |
| Miscellaneous details | Second given name incorrectly entered on Embarkation Roll as Gerhard. |
| Sources | NAA: B2455, GILLEN Thomas Gerard |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
