| Regimental number | 1000 |
| Place of birth | Bunbury, Western Australia |
| Religion | Church of England |
| Occupation | Survey hand |
| Address | 8 May Street, West Perth, Western Australia |
| Marital status | Married |
| Age at embarkation | 34 |
| Height | 5' 6.25" |
| Weight | 156 lbs |
| Next of kin | Wife, Mrs Jane Ann Cahill, 8 May Street, West Perth, Western Australia |
| Previous military service | Served for 130 days in the 1st Australian Light Horse; 2 years in the Bunbury Light Horse. |
| Enlistment date | |
| Place of enlistment | Blackboy Hill, Western Australia |
| Rank on enlistment | Private |
| Unit name | 12th Battalion, H Company |
| AWM Embarkation Roll number | 23/29/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board Transport A7 Medic on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 12th Battalion |
| Recommendations (Medals and Awards) |
Unspecified Recommendation date: Unspecified Recommendation date: |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Parents: Patrick and Sarah CAHILL |
| Discharge date | |
| Other details |
War service: Egypt, Gallipoli, Western Front Wounded in action, Gallipoli, 7 August 1915; France, 6 April 1917. Commenced return to Australia on board HT 'Llanstephan Castle', 15 February 1918; disembarked Fremantle, 8 April 1918; discharged (wounded), Perth, 3 October 1918. Medals: 1914-15 Star, British War Medal, Victory Medal Death attributed to war service. |
| Date of death | |
| Place of burial | Karrakatta Cemetery, Perth, Western Australia |
| Sources | NAA: B2455, CAHILL Walter |