 He was the author of numerous articles on legal and historical subjects.During the Second World War he served from mid-July to mid-September 1944 as an "Ordonnanzoffizier" (orderly officer) on the staff of an anti-aircraft detachment stationed near the Auschwitz camp.As part of his duties, he maintained contact with the SS camp command, and had unlimited access to the Auschwitz main camp, where the command was headquartered.