| Regimental number | 3864 |
| Date of birth | |
| Place of birth | Adelaide, South Australia |
| Religion | Church of England |
| Occupation | Warehouseman |
| Address | Adelaide, South Australia |
| Marital status | Single |
| Age at embarkation | 19.2 |
| Height | 5' 11" |
| Weight | 129 lbs |
| Next of kin | Mother, Mrs F Nettleton, Military Road, Henley Beach, South Australia |
| Previous military service | Served for 3 years in Senior Cadets; 1 year in 77th Infantry, Citizen Military Forces. |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 48th Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/65/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A54 Runic on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 48th Battalion |
| Fate | Effective abroad (still overseas) |
| Discharge date | |
| Family/military connections | Brother: 3857 Pte Roy Harry Ernest CLAMP, 48th Bn, returned to Australia, 25 September 1919. |
| Other details |
War service: England Embarked Sydney, 22 March 1918; disembarked London, England, 24 May 1918. Admitted to 1st Australian Dermatological Hospital, Bulford, 5 July 1919; discharged, 14 October 1919; total period of treatment for venereal disease: 102 days. Admitted to 1st Australian Dermatological Hospital, Bulford, 22 October 1919; transferred to Chiseldon Hospital, 14 November 1919; discharged from hospital, 15 April 1920; total period of treatment for venereal disease: 177 days. Commenced return to Australia on board HT 'Bahia Castillo', 17 April 1920; disembarked Adelaide, 16 June 1920; discharged (termination of period of enlistment), Adelaide, 18 July 1920. Medal: British War Medal |
| Sources | NAA: B2455, CLAMP Sidney William |