| Regimental number | 552 |
| Religion | Protestant |
| Occupation | Carpenter |
| Address | 225 1/2 Lambert Street, Bathurst, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Mrs J Yansen, 225 1/2 Lambert Street, Bathurst, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 25th Battalion B Company |
| AWM Embarkation Roll number | 23/42/1 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A60 Aeneas on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 25th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | Spelled George Sydhval Yansen on Nominal Roll. |
| Age at death from cemetery records | 20 |
| Place of burial | Courcelette British Cemetery (Plot IV, Row F, Grave 23), France |
| Panel number, Roll of Honour, Australian War Memorial | 106 |
| Miscellaneous information from cemetery records | Parents: George and Isabella YANSEN |
| Family/military connections | Brother: 2510 Pte John Andreas YANSEN, 45th Bn, killed in action, 7 June 1917. |