Guadalcanal Campaign - November Land Actions

November Land Actions

Further information: Matanikau Offensive, Koli Point action, and Carlson's patrol

In order to exploit the victory in the Battle for Henderson Field, Vandegrift sent six Marine battalions, later joined by one U.S. Army battalion, on an offensive west of the Matanikau. The operation was commanded by Merritt Edson and its goal was to capture Kokumbona, headquarters of the 17th Army, west of Point Cruz. Defending the Point Cruz area were Japanese army troops from the 4th Infantry Regiment commanded by Nomasu Nakaguma. The 4th Infantry was severely understrength because of battle damage, tropical disease, and malnutrition.

The American offensive began on November 1 and, after some difficulty, succeeded in destroying Japanese forces defending the Point Cruz area by November 3, including rear echelon troops sent to reinforce Nakaguma's battered regiment. The Americans appeared to be on the verge of breaking through the Japanese defenses and capturing Kokumbona. At this time, however, other American forces discovered and engaged newly landed Japanese troops near Koli Point on the eastern side of the Lunga perimeter. To counter this new threat, Vandegrift temporarily halted the Matanikau offensive on November 4. The Americans suffered 71 and the Japanese around 400 killed in the offensive.

At Koli Point early in the morning November 3, five Japanese destroyers delivered 300 army troops to support Shōji and his troops who were en route to Koli Point after the Battle for Henderson Field. Having learned of the planned landing, Vandegrift sent a battalion of Marines under Herman H. Hanneken to intercept the Japanese at Koli. Soon after landing, the Japanese soldiers encountered and drove Hanneken's battalion back towards the Lunga perimeter. In response, Vandegrift ordered Puller's Marine battalion plus two of the 164th infantry battalions, along with Hanneken's battalion, to move towards Koli Point to attack the Japanese forces there.

As the American troops began to move, Shōji and his soldiers began to arrive at Koli Point. Beginning on November 8, the American troops attempted to encircle Shōji's forces at Gavaga Creek near Koli Point. Meanwhile, Hyakutake ordered Shōji to abandon his positions at Koli and rejoin Japanese forces at Kokumbona in the Matanikau area. A gap existed by way of a swampy creek in the southern side of the American lines. Between November 9 and 11, Shōji and between 2,000 and 3,000 of his men escaped into the jungle to the south. On November 12, the Americans completely overran and killed all the remaining Japanese soldiers left in the pocket. The Americans counted the bodies of 450–475 Japanese dead in the Koli Point area and captured most of Shōji's heavy weapons and provisions. The American forces suffered 40 killed and 120 wounded in the operation.

Meanwhile, on November 4, two companies from the 2nd Marine Raider Battalion, commanded by Lieutenant Colonel Evans Carlson landed by boat at Aola Bay, 40 miles (64 km) east of Lunga Point. Carlson's raiders, along with troops from the U.S. Army's 147th Infantry Regiment, were to provide security for 500 Seabees as they attempted to construct an airfield at that location. Halsey, acting on a recommendation by Turner, had approved the Aola Bay airfield construction effort. The Aola airfield construction effort was later abandoned at the end of November because of unsuitable terrain.

On November 5, Vandegrift ordered Carlson to take his raiders, march overland from Aola, and attack any of Shōji's forces that had escaped from Koli Point. With the rest of the companies from his battalion, which arrived a few days later, Carlson and his troops set off on a 29-day patrol from Aola to the Lunga perimeter. During the patrol, the raiders fought several battles with Shōji's retreating forces, killing almost 500 of them, while suffering 16 killed themselves. In addition to the losses sustained from attacks by Carlson's raiders, tropical diseases and a lack of food felled many more of Shōji's men. By the time Shōji's forces reached the Lunga River in mid-November, about halfway to the Matanikau, only 1,300 men remained with the main body. When Shōji reached the 17th Army positions west of the Matanikau, only 700 to 800 survivors were still with him. Most of the survivors from Shōji's force joined other Japanese units defending the Mount Austen and upper Matanikau River area.

Tokyo Express runs on November 5, 7, and 9, delivered additional troops from the Japanese 38th Infantry Division, including most of the 228th Infantry Regiment to Guadalcanal. These fresh troops were quickly emplaced in the Point Cruz and Matanikau area and helped successfully resist further attacks by American forces on November 10 and 18. The Americans and Japanese remained facing each other along a line just west of Point Cruz for the next six weeks.