General Douglas MacArthur wanted to use New Georgia, an island north west of Guadalcanal, to approach the Philippines. Led by Admiral Nimitz, on July 1943, U.S. forces took the island with linguists on the front lines as infantrymen and interrogators.

Two MIS Nisei linguists were awarded the Bronze Star medal for their work on the front lines during the takeover of the island.

On October 27, 1943, U.S. Marine Corps landed on Bougainville, beginning five months of intense fighting. Using information gathered by Nisei linguists, U.S. forces learned that a strong Japanese counterattack would begin on March 23, 1944.

This information allowed U.S. forces to prepare for the attack, known as the Second Battle of Bougainville. The U.S. suffered only one-twentieth the casualties as the Japanese who lost 8,000 soldiers. This victory effectively ended combat in the South Pacific. Two Nisei interrogators received the Bronze Star for providing the warning.