| Regimental number | 27657 |
| Date of birth | |
| Place of birth | Hokitika |
| Religion | Roman Catholic |
| Occupation | Carpenter |
| Marital status | Single |
| Age at embarkation | 23 |
| Height | 5' 7" |
| Weight | 161 lbs |
| Next of kin | Mother, Mrs Sarah Kortegast, Gibson's Quay, Hokitika |
| Previous military service | Served in A Company, 13th Regiment, Territorial Force; still serving at time of NZEF enlistment. |
| Enlistment date | |
| Place of enlistment | Trentham |
| Rank on embarkation | Private |
| Unit name | New Zealand Expeditionary Force, 18th Reinforcements, Specialist Machine Gun Section |
| Embarkation details | Unit embarked from Wellington on board HMNZT 66 Willochra on |
| Final rank | Private |
| Final unit | No 5 Company, New Zealand Machine Gun Corps |
| Fate | Killed in Action |
| Place of burial | No known grave |
| Commemoration details | Tyne Cot Memorial (New Zealand Apse, Panel 9), Tyne Cot Cemetery, Belgium |
| Miscellaneous information from cemetery records | Mother: Mrs Sarah Kortegast, Gibson's Quay, Hokitika, Greymouth |
| Family/military connections | Brother: 6/4084 Henry KORTEGAST |
| Other details |
War service: Western Front Embarked Wellington, 16 October 1916; disembarked Devonport, England, 29 December 1916. Proceeded overseas to France, 16 March 1917. Admitted to No 20 General Hospital, 16 April 1917 (phlebitis: slight); discharged to Convalescent Depot, 7 May 1917. Reported wounded and missing, 12 October 1917. Subsequently listed as 'Killed in action, 12 October 1917.' Undated report, 2nd Corps Burial Officer: Buried ... 20 yds from Waterloo Farm R.A.P.'; grave subsequently lost. Medals: British War Medal, Victory Medal |
| Miscellaneous details | Medical Officer comment at Attestation: 'Like his brother Charles he is of powerful physique.' No Form B103 on file. |
| Sources | Nominal Roll Vol. 2: Roll 43, p. 18 Archives New Zealand (Wellington), Agency AABK, Series 18805, File |