The Military Intelligence Service () was a World War II U.S. military unit consisting of two branches, the Japanese American Unit described here and the German-Austrian Unit based at Camp Ritchie, described partly in Ritchie Boys. The unit described here was primarily composed of Japanese-American Nisei, who were trained as linguists. Graduates of the MIS language school (MISLS) were attached to other military units to provide translation, interpretation, and interrogation services. In May 1942, Alfred McCormack, established the Special Branch of MIS which specialised in COMINT.