Landing Brigadier
Victor Windeyer's
20th Infantry Brigade departed Milne Bay on 2 September. The first waves were carried in
destroyer transports (APDs), old
destroyers that had been converted to use as high-speed amphibious ships; the , , and . Amphibian engineer scouts from the 2nd Engineer Special Brigade's
532nd Engineer Boat and Shore Regiment (EBSR) accompanied them. The rest of the 20th Infantry Brigade travelled less comfortably in the VII Amphibious Force's LCIs and LSTs. The Fifth Air Force carried out raids on the Japanese bases at Madan on 1 September and Wewak on 2 September in support of the operation, sinking a couple of merchant ships totalling 10,000
tons in
Wewak harbour. The convoy stopped for a few hours at
Buna on 3 September, where men on the LCIs were allowed to disembark. At around 12:15, nine Japanese
Betty bombers attacked the landing craft at Morobe, but inflicted no damage or casualties. On the night of 3/4 September, the final voyage to the landing beaches began. The landing was preceded by a short naval bombardment from five US destroyers. It was unopposed by Japanese land forces, with the small number of Japanese that were guarding the shore choosing to abandon their posts rather than fight. lays beach mats to allow vehicles to move along the sand. LST-468 and LCT-174 unload in the background. There was resistance from the air, though. As the fifth wave of seven LCIs was coming in to Red Beach, they were attacked by six
Zeke fighters and three Betty bombers that dropped twelve bombs. One hit the deck of
USS LCI-339 forward of the conning tower; another two were near misses. Badly damaged and riddled by bullets and fragments, the ship caught fire.
LCI-339 remained on the beach, where she served as a landmark for Japanese aircraft. She was eventually towed off the beach, but then drifted onto a reef and became a total loss.
USS LCI-341 suffered a near miss that tore a huge hole in its side. Eight Australians were killed, including Lieutenant Colonel R. E. Wall, the commanding officer of the
2/23rd Infantry Battalion, and 45 were wounded. The landing operation continued despite the air attacks and within four hours of the first landing craft being lowered into the water, around 8,000 men had been put ashore. During the initial phase of the landing the
2/13th Infantry Battalion landed at Yellow Beach securing the beachhead, after which it pushed patrols to the west, to link up with the
2/15th Infantry Battalion – which had landed at Red Beach – before advancing east towards the
Hopoi Mission Station to secure the right flank of the Allied lodgement. The
2/17th Infantry Battalion came ashore on Red Beach behind the 2/15th, and pushed itself towards the west to force its way across the Buso River, and establish a beachhead on its opposite bank. The
26th Infantry Brigade then followed the 20th Brigade ashore, conducting a passage of lines with the 20th Brigade, moving through their position and then pushing west, temporarily assuming control of the 2/17th Infantry Battalion. Engineers laid wire mesh on the beaches, felled trees, built roads and established supply dumps. While the LSTs were unloaded quickly enough, the seven bulk loaded LCTs were not, due to insufficient troops being designated to help unloading. The last was not unloaded until 14:30. At 13:00, six LSTs heading for Red Beach were attacked by a force of about 70 Japanese aircraft. Some 48
Lockheed P-38 Lightnings were vectored to assist.
USS LST-473 was rocked by two bomb hits and two near misses from
Val dive bombers. Eight Americans were killed and 37 Americans and Australians wounded.
USS LST-471 was torpedoed on the port side aft by a Betty bomber; 43 Americans and Australians were killed and 30 were wounded. Particularly hard hit were the commandos of the
2/4th Independent Company, which lost 34 dead and 7 wounded. The remaining ships continued to Red Beach, arriving on schedule at 23:00. On their way back
USS LST-452 and
LST-458 took the two crippled LSTs in tow, and brought them back to Morobe. They then took on their cargo, and later took it to Red Beach. The wounded were taken to Buna by
Humphreys. Japanese aircraft attacked the beach at 15:30. An ammunition dump exploded and a fuel dump was set on fire. The 532nd EBSR lost one man killed and 12 wounded. The following day, after the 26th Brigade had advanced the beachhead about from the initial lodgement, the divisional reserve – the
24th Infantry Brigade – was brought ashore on the evening of 5/6 September. In the days following the landing, the Australians advanced with two brigades forward: the 24th on the coast and the 26th about inland. On the right of the 26th Brigade, flank security was provided by the 2/4th Independent Company, while the 20th Brigade remained behind to secure the beachhead.
Advance on Lae Following the landing east of Lae, the 7th Division, having concentrated in Port Moresby, was flown into Nadzab following its capture by the US
503rd Parachute Infantry Regiment (503rd PIR) on 5 September. Tasked with advancing from the north-west, its main role was to act as a buffer between the 9th Division and Japanese reinforcements which might try to move down through the Markham and Ramu Valleys. The 9th Division's initial advance along the coast met with limited resistance, with the largest Japanese elements being mainly
company-sized. In response to the landing at Nadzab, the Japanese command ordered Lieutenant General
Hidemitsu Nakano's 51st Division to reinforce
Ryoichi Shoge's heavily entrenched garrison at Lae, falling back from the Salamaua region. There were numerous small creeks and rivers west of the Buso, including four major rivers and on the inland route, the 2/23rd Infantry Battalion, having crossed the Buso on the first day, began a series of what author Joseph Morgan has described as "treacherous river crossings and hard slogs...through the jungle". Pushing their way across the Bunga and Buiem Rivers, the 2/23rd fanned out through Apo village while maintaining contact with the 2/17th Infantry Battalion by signal cable. Around the Burep River, the 2/23rd was held up by the terrain and as a result the commander decided to halt and form a battalion defensive position. A
platoon under Sergeant Don Lawrie was pushed forward near the mouth of the river as a protection measure to provide early warning. On 6 September, a company of Japanese attacked the 2/23rd's main defensive position south of the Singaua Plantation on the western side of the Buiem River, alongside a company from the 2/24th Battalion. Having been alerted by Lawrie's platoon who had sent back two runners, the battalion was able to repel the attack, although numerous casualties were inflicted on the 2/23rd and the 2/17th by Japanese mortars. The Japanese company, numbering about 60 men, subsequently fell back towards Lawrie's platoon near the Bunga. Positioned on the Japanese line of retreat, the Australian platoon was subjected to six attacks. These were fended off over the course of the afternoon, and by evening, as heavy rain began to fall, the Australian platoon was able to break contact and withdraw back to the 2/23rd's main defensive position. The Japanese assault on the 2/23rd subsequently delayed the 9th Division's advance for several days, and these would eventually prove significant as in that time, the rain set in, flooding the numerous waterways that forked inland from the coast. Covered with heavy fire from the opposite bank, they would prove difficult for the Australians to cross. As the advance continued, stores were pushed forward from Red Beach, and landed by LCVs and LCMs around Apo Fishing Village on 6/7 September, and then again on 7 September around the Singaua Plantation, from where both the 24th and 26th Infantry Brigades undertook a resupply before the advance continued. The going was slow, with the ground saturated, and the thick jungle and kunai grass along the route of advance delayed the troops who had to cut several tracks through the foliage. On the inland route, the 2/24th led the way towards the Burep River, while along the coast the 2/28th relieved the 2/32nd. As they reached the Burep, the two brigades separated, with the 26th advancing alongside the Burep for several miles before crossing it further inland and then driving towards the Busu. across the Burep River on the way to Lae By 8 September, the commander of the Japanese 51st Division, Nakano, gave the order for his forces and those in Lae to begin their withdrawal northwards, as it became clear that the twin drives on the town threatened them with encirclement. The same day, though, the Australians came up against the most significant obstacle to their advance on Lae – the Busu River – which at its widest was across, and deep. Three days of heavy rain had flooded the river, making it treacherous to cross; however, the need to maintain the initiative forced the Australians to launch a hazardous crossing without bridging equipment or boats. On the coast, the
2/28th Infantry Battalion, under the command of Lieutenant Colonel Colin Norman, attempted to run a cable across the river. This failed after the soldier who made the crossing was killed on the opposite bank by a squad of Japanese. Norman then shifted his focus to the mouth of the river, where there was a small central island that could be exploited to provide some cover for the assaulting troops. Covered by mortars and heavy machine guns, the Western Australians fixed bayonets and advanced in company lots, with the men strung out in extended line. The Japanese opened up with their own mortars and machine guns from well concealed positions on the opposite bank. Thirteen Australians drowned in the crossing, while dozens more were swept away and had to be rescued by troops from neighbouring units. Nevertheless, the 2/28th pushed through, subsequently securing a beachhead on the opposite bank. The weather continued to hamper the 9th Division's advance. The 26th Brigade, further inland, remained stuck on the eastern side of the Busu. On 10 September, the commandos providing flank security managed to get across the Sankwep River, close to its confluence with the Busu, pushing a kunda bridge across. Shortly afterwards, they clashed with a small party of Japanese attempting to advance towards the bridge, and several Japanese were killed. To reinvigorate the 26th, engineer support was brought up. The 2/7th Field Company was pushing a jeep track forward with the help of the 2/48th, and they subsequently arrived with boats, ropes and cables, and several attempts were made to get across, all of which eventually failed as the engineers came under fire from the opposite bank. Heavy clashes later took place as the Australians and Japanese fought desperately in the swamp around the crossing. As it became uncertain whether the 26th would be able to force their way across, a company from the 2/48th was sent south to use the 24th Brigade's crossing and then advance north along the western bank of the Busu to help secure the brigade's beachhead when it finally did get across. on 13 September further engineer stores arrived, including bridging equipment and folding boats, and the following day a
Small Box Girder bridge was pushed across despite heavy fire from the opposite bank, allowing the 26th Brigade to get across the Busu on 14 September. The 26th Infantry Brigade's leading elements immediately clashed with the Japanese on the opposite bank, as they worked to push two battalions towards Kamkamun and the Malahang Mission, to secure the sawmill to the south-west and the northern end of the Malahang airfield. Meanwhile, the 24th Infantry Brigade had pushed the 2/28th along the coast with a view advancing towards Malahang Anchorage, while the 2/32nd and 2/43rd invested Wagan to the south of Malahang airfield. In addition to the weather, the Allied supply situation also proved problematic, with the geography making resupply efforts difficult, while service politics led to arguments between military and naval commanders developing over misunderstandings about the capabilities of the navy and the risks involved in operating close to the shore. These factors combined to stymie the 9th Division's progress and as a result, the 7th Division's troops eventually beat the 9th in reaching the town, with its
25th Infantry Brigade – having fought a sharp action around Jensen's and Heath's Plantations – entering Lae on the morning of 16 September, just ahead of the 24th Infantry Brigade, which had taken the airfield around Malahang the day before. ==Base development==