The division's air force landed at Cape Gloucester from LSTs on D-Day, reassembled their aircraft, and commenced operating. The radios installed in the L-4s proved too balky for artillery spotting, so the group concentrated on courier flights, visual and photographic reconnaissance, and delivering small amounts of cargo. As a light transport, a Piper Cub could drop a case of dry rations, for example, with pinpoint accuracy from an altitude of 200 feet. Occasionally, the light planes became attack aircraft when pilots or observers tossed hand grenades into Japanese positions.
Before the Marines pulled out of New Britain, two Army pilots, flying Stinson L-5s, faster and more powerful than the L-4s, joined the division's air arm. One airplane of each type was damaged beyond repair in crashes, but the pilots and passengers survived. All the Marine volunteers received the Air Medal for their contribution, but a specially trained squadron arrived from the United States and replaced them prior to the next operation, the assault on Peleliu.
The Landings at Volupai
By coincidence, 6 March was the day chosen for the reinforced 5th Marines, now commanded by Colonel Oliver P. Smith, to land on the west coast of the Willaumez Peninsula midway between base and tip. The intelligence section of division headquarters believed that Japanese strength between Talasea, the site of a crude airstrip, and Cape Hoskins, across Kimbe Bay from Willaumez Peninsula, equaled that of the Smith's command, but that most of the enemy troops defended Cape Hoskins. The intelligence estimate proved correct, for Sakai had been preparing a last-ditch defense of Cape Hoskins, when word arrived to retreat all the way to Rabaul.
To discover the extent of Japanese preparations in the immediate vicinity of Volupai, a reconnaissance team landed from a torpedo boat at Bagum, a village about nine miles from Red Beach, the site chosen for the assault landing. Flight Lieutenant G. H. Rodney Marsland of the Royal Australian Air Force, First Lieutenant John D. Bradbeer—the division's chief scout, who had participated in three similar reconnaissance patrols of the Cape Gloucester area before the 26 December invasion—and two native bearers remained ashore for 24 hours and learned that Red Beach was lightly defended. Their sources, principally natives who had worked at a plantation that Marsland had operated in the area before the war, confirmed Marine estimates of Terunuma's aggregate force—some 600 men, two thirds of them located near Talasea, armed with mortars and artillery.
Bristol Beauforts of the Royal Australian Air Force based at Kiriwina Island bombed the Volupai-Talasea region for three days and then conducted a last-minute strike to compensate for the absence of naval gunfire. Smith's force, designated Landing Team A, loaded into a small flotilla of landing craft, escorted by torpedo boats, and set out from Iboki Point. Lieutenant Colonel Robert Amory, Jr., an Army officer in command of an engineer boat unit, took command of the collection of small craft, some of them manned by his soldiers and the others by sailors. A storm buffeted the formation, and after the seas grew calm, the boat carrying the Army air liaison party broke down. Major Gordon D. Gayle, the new commander of the 2d Battalion, 5th Marines, who already was behind schedule, risked further delay by taking the disabled craft in tow. Gayle felt that Combat Team A's need for the liaison party's radio equipment justified his action.
At 0835 on 6 March, the first of the amphibian tractors carrying the assault troops clawed their way onto Red Beach. During the movement shoreward, Sherman tanks in Army LCMs opened fire with machine guns and stood ready to direct their 75mm weapons against any Japanese gunner who might oppose the landing. Aside from hard-to-pinpoint small-arms fire, the opposition consisted mainly of barrages from mortars, screened by the terrain from the flat-trajectory cannon of the tanks. When Japanese mortar shells began bursting among the approaching landing craft, Captain Theodore A. Petras, at the controls of one of the division's Piper Cubs, dived low over the mortar positions and dropped hand grenades from the supply he carried on all his flights. Natives had warned Marsland and Bradbeer of a machine-gun nest dominating the beach from the slopes of Little Mount Worri, but the men of the 1st Battalion, 5th Marines, leading the way, found it abandoned and encountered no serious opposition as they dug in to protect the beachhead.
Meanwhile, Gayle's Marines pressed their attack, with four medium tanks supporting Company E as it tried to push farther inland. One of the Shermans bogged down almost immediately in the soft sand of Red Beach, but the other three continued in column. The tank in the lead lost momentum on a muddy rise, and two Japanese soldiers carrying land mines burst from cover to attack it. Riflemen of Company E cut down one of them, but the other detonated his mine against the vehicle, killing himself and a Marine who tried to stop him. The explosion jammed the turret and stunned the crewmen, who were further shaken, but not wounded, when an antitank grenade exploded against the armor. The damaged Sherman got out of the way; when the other two tanks had passed, it returned to the trail only to hit a mine that disabled it.
Despite the loss of two tanks, one temporarily immobilized on the beach and the other out of action permanently, Gayle's battalion continued its advance. During the fighting on the approaches to the Volupai coconut plantation, the body of a Japanese soldier yielded a map showing enemy dispositions around Talasea. By mid-afternoon, Smith's regimental intelligence section was disseminating the information, which proved valuable in future operations.