Both men immediately started lobbying their superiors to let them continue their investigation. Freud, who was also a chemist, was adamant that the investigation be allowed to continue. He was convinced that Tesch was a major war criminal. He and Pelican told high command that Tesch's case was the first time they were dealing "not with people directly concerned in the murder or ill-treatment of prisoners or slave workers, but with those who lent their skill and services to facilitating the gruesome work of the concentration camps and so identified themselves with breaches of the laws of war on a wholesale scale."
