OSI (Office of Special Investigations)

The Office of Special Investigations (OSI) was a part of the U.S. Department of Defense responsible for identifying and removing individuals with Nazi ties or involved in war crimes from military service and society. Its mission was to ensure integrity within the U.S. military and to uphold justice by investigating allegations of such misconduct. OSI conducted thorough inquiries, gathered evidence, and coordinated with legal authorities to prevent war criminals from remaining in or associating with the military or government.