Last time we spoke about Operation Backhander, the landings at Cape Gloucester. General Douglas MacArthur unleashed another cog in the machine that was his drive back to the Philippines. The 1st Marines under General Rupertus were back in the action, spearheading the landings at Cape Gloucester. The landings were successful and multiple allied units began advancing towards the airdrome. Colonel Sumiya realized the futility of attempting a defense upon the open ground against American armor, so ...
Last time we spoke about Operation Backhander, the landings at Cape Gloucester. General Douglas MacArthur unleashed another cog in the machine that was his drive back to the Philippines. The 1st Marines under General Rupertus were back in the action, spearheading the landings at Cape Gloucester. The landings were successful and multiple allied units began advancing towards the airdrome. Colonel Sumiya realized the futility of attempting a defense upon the open ground against American armor, so he pulled his units away towards Razorback Hill from which they could launch harassment maneuvers against the new American perimeter. Over on New Guinea the Australians continued their drive towards Sio, pushing the Japanese even further north in the process. The Japanese were being attacked in multiple places without the ability to contest them everywhere. What would the Japanese commanders do to establish a proper defense?
This episode is Landing at Saidor
Welcome to the Pacific War Podcast Week by Week, I am your dutiful host Craig Watson. But, before we start I want to also remind you this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Perhaps you want to learn more about world war two? Kings and Generals have an assortment of episodes on world war two and much more so go give them a look over on Youtube. So please subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry for some more history related content, over on my channel, the Pacific War Channel you can find a few videos all the way from the Opium Wars of the 1800’s until the end of the Pacific War in 1945.
Last week we left off with General Nakai unleashing a counteroffensive against Kesawai. The counteroffensive was successful at pushing the Australian commando’s out of the area to prevent them from encroaching upon Madang. These actions worried General Vasey who thought the Japanese might follow them up with an offensive against Dumpu. Vasey elected to carry out a punitive attack along Shaggy Ridge. Perhaps a refresher as I think I did once describe it, but Shaggy Ridge is located six miles north of Dumpu. The razorback ridge has one elevation of more than 5,000 feet, running roughly southeast to northwest. The highest point on the ridge is known as the Kankirei Saddle. There are also three high elevations along the ridge that the Australians named the Pimple, the Intermediate Snipers' Pimple, and the Green Sniper's Pimple. The Japanese had constructed four miles of defenses along the northern part of the ridge. These positions dominated the trail along which the Australians would eventually have to cross. The trail was narrow, only two to three feet wide, and there were drops on either side of 300 to 500 feet. The Japanese had also constructed a rough road on the coast side to a point between the Mindjim and Faria Rivers, making supply to the defenders much easier. The Pimples were the strong points, and the Japanese had built fortified posts with machine guns and deep trenches on each.
Vasey’s punitive force consisted of the 2/16th battalion under the temporary command of Major Garth Symington. Patrols had been sent to figure out decent approaches for an attack against the Pimple, but everything indicated there was only a narrow path to perform a frontal assault from. Thus Symington planned to assault the Pimple and exploit for about 400 yards along the ridge with Captain Christian’s B Company while Captain Anderson’s D Company maneuvered behind to consolidate the ground gained. Fortunately Symington would be receiving aerial support from the American 41st Squadron and Australian No. 4 Squadron, artillery support from the 8th battery and 54th battery and back up from the 2/27th battalion who would launch a diversionary attack against the Japanese along the Faria River and Mainstream area.
During the morning of December 27th, the assault began with 16 Kittyhawks and two Boomerangs bombing the Pimple followed by artillery. Dive bombing, strafing and artillery fire was intense causing reverberation and roars that could be heard up and down the Ramu Valley. An hour later, B Company’s leading platoon departed their startline under the foliage of the rainforest to scale the rock face leading to the pimple. Although the bombardment was stunning, the dazed Japanese defenders quickly responded to the invaders by tossing grenades from the well sited pillboxes atop the pimple. The Australians dashed forward and wiped out the forward pillbox, securing their toehold on the ridge. With the artillery firing further forward the Australians were soon able to capture the second pimple feature just 100 yards ahead, successfully clearing the Japanese from their entrenchments. However at this point, B company came across a strong rock bunker. They first allowed the artillery to smash it, then they tossed grenades while trying to outflank the defenders. A Japanese defender refusing to surrender, covered the entrance to his pillbox with a groundsheet and for about two hours flicked away the grenades thrown at him before they could explode. Eventually he was blasted out when a grenade was tied to the end of a bamboo pole which was poked into the pit, the pin being pulled out by a length of string. More than 100 grenades were thrown during the day at the rock bunker in front of the second pimple. As hard as they tried it was impossible to outflank as the sides of the razorback guarding the bunker were almost perpendicular. Christian was forced to pull B company back and dig in on the second pimple.
Meanwhile, D company came up to relieve the exhausted men of B company. To deal with the bunker menace, Australian Pioneers chiseled a track along the cliff face towards it and designed a special bomb consisting of a grenade placed in a chemical and sealed in a field ration tin. During the morning of the 28th, D company advanced over their newly cut track and hurled the new bombs successfully blowing up the enemy bunker. While this was occurring, Lt Scott’s 18th Platoon was advancing down the eastern slope of Shaggy Ridge attempting a encircling maneuver against the third pimple. At 10.50 a.m Scott reported being at the base of the third pimple and a quarter of an hour later the artillery and mortars began firing smoke to cover his Platoon’s advance. At the foot of the objective Scott ordered his platoon sergeant, Longman, to take a small party of Owen gunners up the third pimple. Under heavy enemy machine-gun fire Longman and three men charged an enemy machine-gun post near the top. Two of his men were wounded but Longman and the other man continued to advance upon the enemy post and eventually silenced it with Owen-gun fire. To reach the enemy post they had to pull themselves up a steep slope with one hand and fire their Owens with the other. Still under heavy fire from other enemy posts the two men covered the evacuation of the two wounded and neutralized the fire of another enemy post 40 yards away which was opposing the advance of the rest of the platoon, led by the wounded Scott, up the cliff face. Nine minutes after Longman led the first assault, Scott was in possession of the third pimple and was covering the advance of Lieutenant McCaughey's 16 Platoon to the fourth and highest pimple, later named McCaughey's Knoll, farther along the ridge. The two platoons then dug in on the newly-won ground. During the afternoon, the battered Japanese attempted a counterattack but were easily repelled, suffering a total of 28 dead during the battle against Symington’s three killed and eight wounded.
After the pimples were captured, the fighting fell into a series of artillery duels and patrol skirmishes. With the Pimples in hand the Australians could observe Madang. Vasey at this time acquired further support from General MacArthur who relieved his exhausted brigades with the 18th and 15th brigades. Meanwhile General Adachi sensed key points in the Madang area were not defended well enough, so he ordered the bulk of the 41st division to advance from Wewak to Madang. In early december, the 2nd battalion, 237th regiment and 2nd mountain artillery battalion of the 41st group were deployed at Karkar island. However the movement of the rest of the division was sent to the Gogol area and was heavily delayed by storms that caused numerous rivers to overflow. But now we are shifting gears and heading over to the Huon Peninsula where a new allied landing was about to occur.
In early December, General MacArthur finally decided to act upon a suggestion put forward by his assistant chief of staff Lt General Stephen Chamberlain. Chamberlain argued Saidor on the south side of the Huon Peninsula should be occupied in order to construct an advanced air and naval base. MacArthur waited until two days before the Arawe expedition, before giving orders to Krueger to prepare plans for a landing against Saidor. Because of limited landing craft the landings would need to be pushed until January 2nd. The operation was code named Michelmas and initially it was thought the 503rd parachute infantry could be airdropped over Saidor, but a limited number of aircraft killed this one in the crib. Thus the 32nd division who had been earmarked for the canceled Gasmata landings were chosen for the task. The general outline for the operation was discussed at a conference held on Goodenough island on December 20th attended to be Barbey, Major General William Gill, Whitehead commanding the 32nd division, Colonel Clarence Martin commanding the 126th regiment and other staff officers. Allied intelligence reports indicated the Japanese had few forces in the Saidor region. Nevertheless, the plans called for landings in force on three beaches codenamed Red, White and Blue on the west shore of Dekay’s bay.
If the Americans could successfully seize Saidor, this would cut the Japanese retreat from Finschhafen and therefore would trap another Japanese division at Sio. Krueger selected the 126th Regiment for the task after they were rebuilt following the Battle of Buna-Gona and retrained in amphibious warfare. Brigadier-General Clarence Martin would act as the commander of the new Michaelmas task force. MacArthur did not have much time to carry out ground reconnaissance, thus the 3 beaches selected were chosen primarily from aerial photograph data. They would prove to be quite narrow, rocky and exposed to heavy seas. Because the allied intelligence indicated few Japanese forces in the area, MacArthur elected not to perform a preliminary aerial bombardment.
Admiral Barbey’s amphibious force were now well experienced veterans with amphibious landings, so the last minute notice did not hinder them too much. On January the 1st, Martin’s men were tossed onto 9 APD’s, 17 LCI’s and two LST’s supported by 9 of Barbey’s Destroyers and Admiral Crutchley’s Cruiser force, hoping to intercept some IJN forces. Yet Crutchley would be disappointed as Admiral Koga had his hands full with something cooking up at Rabaul and Kavieng and could not afford to dispense units to Saidor. What could hinder the landings was air forces from the IJA at Wewak, though they were considerably weakened with just 39 fighters, 17 light bombers and 7 heavy bombers available after so many allied air strikes.
The landings went off smoothly. The beaches were hit by more than 2000 shells within 20 minutes prior to the first LCV landings at around 7am. Two battalions of the 126th landed abreast without opposition and quickly established a perimeter. Soon a 3rd battalion passed through and extended the perimeter further left upon high ground, just southwest of an unserviceable airfield. Captain Meredith Muggins, who played a key role in the capture of Sanananda, recalled his impressions of this seemingly uneventful landing:
“When we landed at Saidor it was an amazing sight. There were dozens of warships bombarding the coast. The sound was like a rolling thunder and the smoke hung along the ground. As we approached the beach, air attacks began. Heavy bombers dropped their load of high explosive from a few thousand feet. Then came in the B-25 strafers shooting everything in sight, clobbering positions. Behind them came fighters to give the Japs a final working over. There was very little opposition when we landed. We found a few wandering around in shell shock. What a contrast from the days at Buna and Sanananda, only a year before, when we were fighting with rifles, grenades, and rocks!”
Thus 8000 troops were landed ashore by the end of the day. The only real resistance came in the form of some air raids from Wewak beginning at 4pm. 9 Japanese Nakajima Ki-49 (Helen) aircraft, escorted by up to 20 Zeros and Kawasaki Ki-61 (Tony) fighters bombed the beach area at 4:30pm. There were three more air raids during the night, and 49 over the course of the month, but most were quite small. Thus on Januaruy the 3rd MacArthur triumphantly stated “We have seized Saidor on the north coast of New Guinea. In a combined operation of ground, sea and air forces, elements of the Sixth Army landed at three beaches under cover of heavy air and naval bombardment. The enemy was surprised both strategically and tactically and the landings were accomplished without loss. The harbour and airfields are in our firm grasp. Enemy forces on the north coast between Sixth Army and the advancing Australians are trapped with no source of supply and face disintegration and destruction.” The Saidor area and her landing strip were in allied hands and further men and supplies would be brought over without enemy interference.
Over on the Japanese side, General Adachi had the understrength and exhausted 51st division garrisoning Sio while the 20th division was retreating from the Finschhafen area. On December 30th, Adachi arrived to Kiari where he ordered the 51st to advance to Bogia, once the 20th had arrived at Sio. Since mid December, some units, such as the bulk of the 66th regiment had already made it to Bogia, where they could be rehabilitated, leaving just the 3rd composite battalion of the 66th regiment, the 3rd battalion HQ, the 10th company and one machine gun company to garrison Gali under the leadership of General Muroya. Just as Adachi was preparing to depart on January 2nd, he received word of the allied landing at Saidor which effectively opened up a new and important threat against his isolated forces. Adachi believed it was now useless to hold on to Sio and the Vitiaz Strait, since enemy troops were also landed on New Britain. Furthermore his main base at Madang was now vulnerable.
Thus Adachi placed General Nakano in command of both divisions now designated the Nakano force and ordered him to advance the forces to Gali by submarine to try and secure the new key supply point while the Shoge detachment would delay the Australian advance to Sio. Nakano would therefore have to break through or bypass Saidor overland to arrive safely at Madang. Additionally the 41st division was ordered to depart Wewak immediately and advance overland towards Madang. General Nakai was given orders to advance his detachment towards Saidor to try and contain the American advance as long as possible and this would only leave the 2nd battalion, 78th regiment under Colonel Matsumoto Matsujiro on the Kankirei Saddle-Shaggy Ridge area. On January 3rd, Lt General Goro Mano was flown directly to Alexishafen to assume command of all units in the Madang region, including the Matsumoto detachment.
Back over in Saidor, the Americans began to send patrols and an outpost was setup at Sel on January the 5th while the 3rd battalion, 126th regiment skirmished with other American patrols at Teterei and Biliau. General Muroya managed to secure Gali without much difficulty. Meanwhile, upon receiving the news of the Saidor landing, Brigadier Windeyer’s 20th Brigade continued their advance, expecting the march to be a lot easier. After fording the Sanga River on January 3rd, the 2/17th battalion advanced to the Sazomu river while fighting off elements of Colonel Miyake’s rearguard. At this point General Katagiri’s forces were in a full retreat towards Kiari, only performing some rearguard against around Kelanoa. Thus the 2/17th advance went pretty much undisturbed as they reached the Dallman River on January 6th. Kelanoa offered more defensible positions, so Windeyer cautiously sent some patrols to scout the area out, trying to avoid unnecessary casualties.
At 8 a.m. on the 8th the 2/17th resumed their advance and half an hour later their leading company was met with some fire from a track junction. There seemed to be about 40 determined Japanese with four machine-guns holding the area. The Australians killed 8 Japanese and lost 2 in the process with another 2 wounded. As the company could make no headway without further casualties they withdrew to a kunai patch south-east of the track junction so that artillery mortars and machine-guns could hit the Japanese. The position was hit with mortar heavily causing the Japanese to withdraw during the night. The next day at 9:30am the Australian battalion advanced through the position finding abandoned pill boxes, foxholes and several dead Japanese. Later during the day, a group of 30 heavily armed Japanese fire upon the battalion 1500 yards from the Buri River. The Australians unleashed artillery, mortars and machine guns upon them until 4pm when some tanks arrived forcing the Japanese to flee.
Meanwhile the Japanese were able to repair 12 barges which were quickly used to evacuate wounded towards Gali. Unfortunately, allied PT boats were lurking in the area like sharks. The PT boats unsuccessfully attacked Adachi’s submarine that was bringing him back over to Madang but managed to destroy one barge carrying 100 wounded near Herwath Point and damaged others. Most of the wounded would reach Gali by the 10th and 20th division advanced past Kiari on the 9th and were drawing closer to Gali. The 2/17th crossed the Buri River on the 10th and reached the Kapugara river the next day without opposition. General Nakano departed Kiari with his division heading for Gali. It was now only the Shoge detachment that stood in the path of the Australians. The Shoge detachment received orders on January 13th to withdraw towards Sio using an exhausting inland route going from Nambariwa to Nokopo. The Australians would soon enter the ruins of Nambariwa finding the Japanese had destroyed numerous large dumps. Nambariwa had been the principal Japanese supply base for the Finschhafen area, both banks of its river had been barge loading points. There were numerous facilities such as barge workshops, engineer store dumps, hospital areas and bivouac areas. By January 15th the Australian forces would occupy Sio uncontested.
General Wootten’s 9th division had completed its mission and it would be their last action in New Guinea. Wootten had received word in early January that the 8th Brigade led by Brigadier Claude Cameron was being brought over to Finschhafen to relieve the 24th Brigade. Now with the fall of Sio, General Berryman ordered the 5th division now under the command of Major General Alan Ramsay to take over the forward area. Mop up operations would continue for a week, until the 4th battalion, 8th brigade and 5th division officially took over Sio. The advance from Fortification Point to Sio saw the 20th Brigade suffer 3 deaths, 13 wounded and 958 sick from malaria, mosquitoes remaining a larger foe than the Japanese as usual. The 20th brigade had marched 50 miles in 24 days and counted a total of 303 dead Japanese and captured 22. Within the 4 months campaign going back to September 22nd, Wootten’s 9th division had suffered 283 deaths and 744 wounded, but estimated they killed 3099 Japanese, captured 39 and inflicted around 4644 wounded. Now we are heading back to the boys on New Britain.
With the airdrome secured and a strong defensive perimeter surrounding it, General Rupertus radioed the commander of the 6th Army “First Marine Division presents to you as an early New Year gift the complete airdome of Cape Gloucester. Situation well in hand due to fighting spirit of troops, the usual Marine luck and the help of God…” General Krueger expressed himself as "delighted." At his advance headquarters at Port Moresby General Douglas MacArthur, presented the airdrome to the people of the United States with his compliments and sent Rupertus the following dispatch: “I extend my heartiest congratulations to your officers and men. I am filled with pride and gratitude by their resourceful determination in capturing Cape Gloucester. Your gallant Division has maintained the immortal record of the Marine Corps and covered itself with glory.” General Rupertus raised the US flag on an improvised staff above the main strip with simple ceremonies on December 31. Soon American engineers were being brought over to repair the airfield as the Japanese sent nightly air raids to hamper these efforts. The Japanese still held several operational airfields within range, but their efforts to bomb the Americans positions were hampered by terrible weather. They also never massed air forces to attack in great strength, thus the damage was always minor and easily repairable.
To the east, assistant commander of the 1st Marines, Brigadier General Lemuel Shepherd assumed command of the forces within the Yellow Beach perimeter. Due to the lack of Japanese resistance around the airdrome, the Marine commanders were convinced General Matsuda was retaining the bulk of his strength in the Borgen Bay area, thus leaving Colonel Sumiya out to dry. Shepherd elected to take his force and use them to clear up the Borgen Bay area. On January 1st he proposed to hold fast on the left and center of the Yellow Beach perimeter, while his right line consisting of the 3rd battalions of the 7th and 5th Marines would advance southeast. On the other side, Colonel Katayama had just arrived at Magairapua with his 2nd battalion on January 1st. It seems at this point Matsuda made an error. Perhaps its because he was essentially a transportation expert rather than a combat leader, perhaps it was due to his failed initial attacks, but he decided to place Katayama in command of all the forces in the Brogen Bay area. Now designated the Katayama detachment, these forces were the 2nd battalion, 53rd regiment and 2nd and 3rd battalions 141st regiment.There would also soon be Major Tatsumi Asaschichi’s 3rd Battalion who were still en route from Nigol and Cape Bushing.
Katayama first tackled his command by underestimating his enemy’s strength. Katayama ordered an offensive in force against Target Hill to be led by Captain Mukai Toyoji’s 2nd battalion, 141st regiment. Major Takabe Shinichi’s 2nd Battalion, 53rd Regiment, would attack the center of the marine perimeter to confuse the Americans and prevent them from reinforcing the hill. At this time Target Hill was being defended by the 1st Battalion, 7th Marines, more particularly their A Company . This unit was deployed with its 1st Platoon defending the area on the left between the beach and swamp, the 2nd Platoon holding a series of strong points on such dry ground as could be found in the swamp itself, and only the 3rd Platoon on the hill proper. Unbeknownst to Katayama, Shepherd had begun his offensive at 10:00am on the 2nd. The 3rd Battalion, 7th Marines, under the temporary command of Lieutenant-Colonel Lewis B. Puller and 3rd Battalion, 5th Marinesunder the command of Lieutenant-Colonel David S. MacDougal were advancing abreast southeast towards Suicide Creek.
The terrain they were traversing was particularly brutal. The 3rd battalion had to hack their way through the jungle going some 300 yards where they would come across well prepared Japanese positions. The 5th battalion had a longer distance to travel, but would encounter less resistance at the early phase. The 5th battalion attempted an encircling movement from the west, the assault troops soon encountered the face of the same Japanese pocket that was holding up the 3rd battalion and were halted in turn. As a result, the attacking lines on the night of 2 January, and throughout 3 January, resembled a huge letter "U", with the enemy strong point contained on three sides.
Recognizing Suicide Creek was a major obstacle, the Japanese had sited their positions skillfully to cover it. Time after time Marines attempted crossings, only to be fired upon from invisible positions. The Japanese had become experts at field fortifications. The jungle curtailed both their attackers' freedom of movement and enhanced their own concealment: Marines would need get within just a few feet of the emplacements in order to locate them, by which time few were left alive to spot them for others. Even their lack of fortification materials--cement and steel reinforcing--reacted in favor of the Japanese, for the earth-and-log bunkers which they improvised were too soft-surfaced to detonate bazooka rockets, the heaviest weapons the infantry was capable of bringing to the point of contact. To support these bunkers, they had dug deep foxholes between and under the flaring buttress roots of the giant trees characteristic of the region, camouflaging them with foliage and cutting cunningly interlocking fire lanes. Artillery and mortar shells and air bombs were all but useless in reaching these positions, owing to the fantastically high forest cover that usually caused tree bursts, to which the deeply dug-in enemy was virtually invulnerable. The marines gradually surrounded the well prepared positions of the 2nd battalion, 53rd regiment during the night, but they could do little else as each attack brought failure.
Under the cover of darkness and Marine mortar fire, Katayama’s assault troops and engineers hacked their way to the lower slopes of Target Hill. They did their best not to make any noise as they attempted scaling it, but the Marine defenders heard them. On January 3rd they launched their attack, unleashing artillery, mortar and 20mm machine cannon fire from below the hill. However most of the artillery missed the hill altogether, and the 20mm cannon fire was not causing much damage. Company D's mortars replied from their positions behind the hill, but the high angle of fire precluded effective damage to the advance enemy elements which had actually worked their way to positions about 20 feet from the Marines' front emplacements by then. Katayama’s 5th company leading the assault fought bravely and with great determination, but against the steep terrain and inadequate support, against a very alert enemy proved too much for them. By dawn the attack had died down and the 5th company was virtually annihilated. Further to the west, the 53rd regiments secondary attack had achieved little more and suffered heavily for it. The Japanese were now trying to resist Shepherds attacks along the Suicide Creek while engineers of the 17th Marines were building a corduroy causeway across the coastal swamp to enable tanks to come into the action. By the morning of the 4th, following a 15 minute artillery bombardment, the first Sherman wallowed through the shallow water and mounted itself on the opposite bank. Soon the other Shermans followed and their 75mm guns began to absolutely devastate the Japanese emplacements from point blank range. Shepherd’s assault battalions surged forward across their whole front, encountering no further opposition. Encouraged by the victory and the apparent death or withdrawal of all Japanese in contact to the immediate front, General Shepherd ordered the advance to continue, changing direction to south-southeast. Meanwhile, the 2d Battalion, 7th Marines, pinched out by the successful sweep of its former front and the tying-in of 3rd battalion and 1st battalion on their left, executed a wide swing inland, made contact with the right of 3rd battalion, 5th marines extending the line westward. By the nightfall, Shepherd held a 4 battalion strong front against Katayama’s positions at Aogiri Ridge and Hill 150.
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Operation Michaelmas, the landings at Saidor were a great success, forcing General Adachi to shift numerous units around, scrambling to remedy the situation. Yet with so many Japanese units trapped, isolated and continuing to retreat north, would they ever be able to halt the allied advance?
