| Regimental number | 553 |
| Place of birth | Brisbane Queensland |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Brisbane, Queensland |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, John Klaasen, Lytton Road, East Brisbane, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 41st Battalion, B Company |
| AWM Embarkation Roll number | 23/58/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A64 Demosthenes on |
| Regimental number from Nominal Roll | 553A |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 41st Battalion |
| Fate | Killed in Action |
| Place of burial | Strand Military Cemetery (Plot III, Row D, Grave No. 1), Ploegsteert, Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 134 |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
