| Regimental number | 481 |
| Place of birth | Moore Park, Flinders Street, Sydney, New South Wales |
| School | Fort Street High School, Sydney, New South Wales |
| Religion | Presbyterian |
| Occupation | Farmer |
| Address | Ulomogo, Curban, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Height | 5' 5" |
| Weight | 131 lbs |
| Next of kin | Father, Francis K.N. Alldritt, Bank of NSW, Kensington, New South Wales |
| Previous military service | Served for 3 years in Senior Cadets; not serving in any military unit at time of AIF enlistment. |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Private |
| Unit name | 1st Light Horse Regiment, C Squadron |
| AWM Embarkation Roll number | 10/6/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A16 Star of Victoria on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Light Horse Regiment |
| Fate | Killed in Action |
| Place of death or wounding | Monash Valley, Gallipoli, Turkey |
| Age at death | 23 |
| Place of burial | Quinn's Post Cemetery (Row B, Grave 5), Gallipoli, Turkey. |
| Panel number, Roll of Honour, Australian War Memorial | 2 |
| Miscellaneous information from cemetery records | Parents: Francis Knight Northey and Roberta Judd ALLDRITT |
| Family/military connections | Brothers: 2035 Pte Robert Gregory ALLDRITT, 20th Bn, returned to Australia, 3 January 1916; 2106 Pte Northery Brice ALLDRITT, 3rd Bn, returned to Australia, 28 March 1919. |
| Other details |
War service: Egypt, Gallipoli Proceeded to join the Mediterranean Expeditionary Force, Gallipoli, 9 May 1915. Killed in action, 18 May 1915. Buried, 20 May 1915, Chaplain E.N. MERRINGTON, officiating. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, ALLDRITT Ralph |