| Regimental number | 6299 |
| Place of birth | Balaklava, South Australia |
| School | Prince Alfred College, Adelaide, South Australia |
| Other training | Caterer's Commercial College, Adelaide, South Australia |
| Religion | Church of England |
| Occupation | Hardwareman |
| Address | Pinjarra, Western Australia |
| Marital status | Married |
| Age at embarkation | 45 |
| Next of kin | Wife, Mrs Edith Helen Mills, Pinjarra, Western Australia |
| Previous military service | Served for 2 years in the Volunteer Forces in South Australia. |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 16th Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/33/4 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A23 Suffolk on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 16th Battalion |
| Fate | Died whilst a Prisoner of War |
| Place of death or wounding | Dulmen, Germany |
| Age at death | 46.6 |
| Age at death from cemetery records | 46 |
| Place of burial | Cologne Southern Cemetery (Plot X, Row A, Grave No. 5), Germany |
| Panel number, Roll of Honour, Australian War Memorial | 80 |
| Miscellaneous information from cemetery records | Parents: Samuel and Catherine MILLS ; husband of Edith MILLS, Pinjarra, Western Australia. Native of Balaklava, South Australia |
| Family/military connections | Son: 4669 Pte Reginald MILLS, 48th Bn, returned to Australia, 21 July 1917 (severely wounded). |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |