 Coward carried out this scheme on numerous occasions and is estimated to have saved at least 400 Jewish slave labourers.In December 1944 Coward was sent back to the main camp of Stalag VIII-B at Lamsdorf (now Łambinowice, Poland) and in January 1945, the POWs were marched under guard to Bavaria, where they were eventually liberated.After the war, Coward testified at the Nuremberg war crimes trials, describing the conditions inside the Monowitz camp, the treatment of Allied POWs and Jewish prisoners, and the locations of the gas chambers.