| Regimental number | 575 |
| Place of birth | Narrabri, New South Wales |
| School | Brisbane Public School, Brisbane, Queensland |
| Religion | Presbyterian |
| Occupation | Clerk |
| Address | Lucinda Street, Taringa, Brisbane, Queensland |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Mother, Mrs A Henderson, Lucinda Street, Taringa, Brisbane, Queensland |
| Previous military service | Served in the Cadets |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, A Company |
| AWM Embarkation Roll number | 23/43/1 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 26th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *noted as Roy Douglas on NR |
| Age at death | 18 |
| Place of burial | Courcelette British Cemetery (Plot IV, Row F, Grave No. 18), France |
| Panel number, Roll of Honour, Australian War Memorial | 107 |
| Miscellaneous information from cemetery records | Parents: Arthur and Caroline HENDERSON. Nataive of Narrabri, New South Wales |
| Family/military connections | Brothers: 580 Lance Sergeant John Stewart HENDERSON, 26th Bn, killed in action, 29 July 1916; 4797 Pte Erle Hamilton HENDERSON, 9th Bn, killed in action, 20 September 1917; 2828 Pte Arthur Thomas HENDERSON, 9th Bn, returned to Australia, 25 April 1918. |
| Other details |
War service: Egypt, Gallipoli, Western Front Medals: 1914-15 Star, British War Medal, Victory Medal |