A Surabaya lawyer-turned-prisoner is handed a lieutenant colonel’s commission in Tokyo and asked to draft the Dutch indictment - how did that appointment expose him?
The Lieutenant Colonel's Commission Made the Prisoner the Prosecutor
In this episode, we tell the story of Jacobus Sinninghe Damsté, a Surabaya lawyer who survived forced labor on Maluku airfields and the notorious Sumatra Railway, and who was later commissioned to prepare indictments in Tokyo; what does the record’s silence about his inner life and that surprising appointment reveal? The episode traces his prewar civic life, wartime captivity, and the choices that led a civilian prisoner to become a prosecutor.
Person: Jacobus Sinninghe Damsté (Koos)
Location: Surabaya; Maluku Islands; Pekanbaru, Sumatra; Tokyo
Date: 1943-1946 (captivity and Tokyo commission), 1920s-1941 (prewar career)
Occupation: Lawyer; Surabaya city councillor; president of the Simpang Club; later wrote memoirs and ran Netherlands Security Service
Event: Building airfields in Maluku and cutting the Sumatra Railway; later given a lieutenant colonel's commission to prepare the Dutch indictment
- Koos arrived in Maluku in April 1943 and spent eight months building airfields for the occupying forces after a life as a Surabaya lawyer.
- Transfers in captivity took him to Jakarta in January 1944 and to Pekanbaru in May 1944, where he worked on the Sumatra Railway described in the record as notorious.
- Before the war he was a civic figure: law graduate from Groningen, legal consultant to a German industrial subsidiary, city councillor, and head of colonial clubs in Surabaya.
- His first wife died in 1935; he remarried in 1938 and had three sons-Willem (Pim), Cornelis (Hans), and Dick-details the record notes without elaboration.
- After surviving fifteen months on the railway, he was given a lieutenant colonel’s commission and directed to Tokyo to prepare the Dutch indictment against Japanese war criminals.
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