 They were joined by contract breakers of the German Arbeitseinsatz (forced labour program), deserting Waffen SS soldiers, deserting German truck drivers of the Nationalsozialistische Kraftfahr-Korps, and lawbreaking members of the NSB (the Dutch National Socialist Movement).This mixture of prisoners was not the only feature that determined the character of Kamp Amersfoort.The extreme cruelty of the camp command made life miserable for thousands of prisoners.