In 1939 Salomon Brandel was registered as a communist with the Central Intelligence Service.
Archief Centrale Inlichtingendienst
Salomon Brandel was killed in concentration camp Amersfoort on 22 November 1942. He was a door-to-door salesman.
Death books of Camp Amersfoort; these can be consulted at the website of the National Memorial Camp Amersfoort