Question: What division of the American armed forces fought the Imperial Japanese Army, also know as the "Dai-Nippon Teikoku Rikugun", or "Army of the Greater Japanese Empire", at Bougainville during World War Two?
Sentence (from "Koiari Raid"): The Koiari Raid was a battle that occurred between 28–29 November 1943 in the Pacific theater of World War II between American and Japanese forces.
Relevant evidence: No