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 "Japanese marine paratroopers of World War II"): The 2nd Yokosuka took no part in any airborne operations and became an island defensive base unit.
Relevant evidence: No