Van Deman founded the Corps of Intelligence Police to conduct undercover investigations of individuals and organizations. The Army was concerned about German spies and saboteurs. Van Deman was equally concerned about the loyalty of recent immigrants being drafted into service. He feared that the newly forming National Guard and National Army divisions might become “infested” with German agents and sympathizers. To protect the force, two soldiers within each company were appointed to secretly report on any suspicious activity, using the guidelines contained in a confidential pamphlet, “Provisional Counter-Espionage Instructions”.[3]
After World War I, the CIP was shrunk and its budget cut until, by 1941, it had a staff of only 16. After the attack on Pearl Harbor, the CIP was reorganized, expanded, and renamed the Counter Intelligence Corps.[4][5]