Breaking the Bismarcks Barrier, 22 July 1942 - 1 May 1944, Volume 6 in the series, examines the drive up from Guadalcanal and New Guinea to the taking of Rabaul and the colossal American victory at the Battle of the Bismarck Sea during the Papuan campaign. This volume also covers the Central Solomons, the Huon Gulf offensive, the invasion of New Georgia, and the Battles of Kula Gulf and Kolombagnara.