Up The Slot: Marines in the Central Solomons

Transcriber’s note: Table of Contents added by Transcriber and placed into the Public Domain.
Marines in World War II Commemorative Series
By Major Charles D. Melson U.S. Marine Corps (Ret)
The approach to Rendova Harbor as seen from the deck of an LST carrying Marines ashore. It sails through the narrow Renard Entrance with Rendova Peak in the background and the Lever Brothers’ landing at the right just around the bend. (Marine Corps Historical Collection)

by Major Charles D. Melson, U.S. Marine Corps (Ret)
Operation Watchtower was the codename assigned by the Joint Chiefs of Staff for the reduction of the Japanese stronghold at Rabaul, on the easternmost tip of New Britain Island in the Bismarck Archipelago. The plan called for the South Pacific Area forces of Vice Admiral Robert L. Ghormley (relieved in November 1942 by Vice Admiral William F. Halsey) to move up the chain of the Solomon Islands toward Rabaul, beginning with the Guadalcanal landings on 7 August 1942. In December that year, patrol flights taking off from Henderson Field on Guadalcanal and from the decks of U.S. fleet carriers in the waters around the Solomon Islands discovered the Japanese hard at work on a well-camouflaged airfield at Munda on the northern end of New Georgia. This new field posed a definite threat to the Allies still fighting to wrest Guadalcanal from the enemy. It had to be taken, or at the very least, neutralized. U.S. pilots also reported another field being completed on Kolombangara across the Kula Gulf from New Georgia.
In response to these potential threats, Operation Toenails, landings in the New Georgia Islands in the Central Solomons with the capture of Munda as the primary objective, were planned, scheduled, and mounted. The first step leading to the invasion of New Georgia was the occupation of the Russell Islands, 65 miles northwest of Guadalcanal, which would serve as a forward base on which airfields would be constructed. Operation Cleanslate on 21 February 1943 saw the Marine 3d Raider Battalion (Lieutenant Colonel Harry B. Liversedge) land on Pavuvu, and the 43d Infantry Division (less a regimental combat team) invade Banika. Both landings were unopposed. The 11th Defense Battalion landed on Banika the same day and had its guns in place by noon. By 15 April, Allied aircraft began operating from the first of two new airstrips the Seabees constructed on Banika.