The Military Intelligence Service (MIS) took part in much of the action in the Asiatic-Pacific Theater during World War II. The MIS Nisei accompanied every major Army and Marine unit in the US Armed Forces as well as units of Allied nations, including Australia, New Zealand, Great Britain, India and China. The MIS Nisei also worked in intelligence centers in the United States, Australia and India.
The MIS participated in the following operations during and after the Pacific war. Campaigns with their corresponding battles and actions are listed below in chronological order.1 Also included is key information on the initial deployment of the MIS linguists, the translation of the Z-Plan document, and the occupation efforts in Japan.