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 "Battle of Hellzapoppin Ridge and Hill 600A"): Although minor in terms of casualties and in comparison to other battles in the campaign, the battle was the last significant action undertaken by the 3rd Marine Division on the island before they were replaced by United States Army soldiers from XIV Corps.
Relevant evidence: No