He chose the fresh 1st Battalion, 7th Marines, commanded by Lieutenant Colonel Lewis B. “Chesty” Puller, to move inland along the slopes of Mt. Austen and patrol north towards the coast and the Japanese-held area. Puller’s battalion ran into Japanese troops bivouacked on the slopes of Austen on the 24th and in a sharp firefight had seven men killed and 25 wounded. Vandegrift sent the 2d Battalion, 5th Marines, forward to reinforce Puller and help provide the men needed to carry the casualties out of the jungle. Now reinforced, Puller continued his advance, moving down the east bank of the Matanikau. He reached the coast on the 26th as planned, where he drew intensive fire from enemy positions on the ridges west of the river. An attempt by the 2d Battalion, 5th Marines, to cross was beaten back.
About this time, the 1st Raider Battalion, its original mission one of establishing a patrol base west of the Matanikau, reached the vicinity of the firefight, and joined in. Vandegrift sent Colonel Edson, now the commander of the 5th Marines, forward to take charge of the expanded force. He was directed to attack on the 27th and decided to send the raiders inland to outflank the Japanese defenders. The battalion, commanded by Edson’s former executive officer, Lieutenant Colonel Samuel B. Griffith II, ran into a hornet’s nest of Japanese who had crossed the Matanikau during the night. A garbled message led Edson to believe that Griffith’s men were advancing according to plan, so he decided to land the companies of the 1st Battalion, 7th Marines, behind the enemy’s Matanikau position and strike the Japanese from the rear while Rosecran’s men attacked across the river.
The landing was made without incident and the 7th Marines’ companies moved inland only to be ambushed and cut off from the sea by the Japanese. A rescue force of landing craft moved with difficulty through Japanese fire, urged on by Puller who accompanied the boats on the destroyer Ballard (DD 660). The Marines were evacuated after fighting their way to the beach covered by the destroyer’s fire and the machine guns of a Marine SBD overhead. Once the 7th Marines companies got back to the perimeter, landing near Kukum, the raider and 5th Marines battalions pulled back from the Matanikau. The confirmation that the Japanese would strongly contest any westward advance cost the Marines 60 men killed and 100 wounded.
Shortly after becoming Commander, South Pacific Area and Forces, VAdm William F. Halsey visited Guadalcanal and the 1st Marine Division. Here he is shown talking with Col Gerald C. Thomas, 1st Marine Division D-3 (Operations Officer).
Department of Defense (USMC) Photo 53523
The Japanese the Marines had encountered were mainly men from the 4th Regiment of the 2d (Sendai) Division; prisoners confirmed that the division was landing on the island. Included in the enemy reinforcements were 150mm howitzers, guns capable of shelling the airfield from positions near Kokumbona. Clearly, a new and stronger enemy attack was pending.
As September drew to a close, a flood of promotions had reached the division, nine lieutenant colonels put on their colonel’s eagles and there were 14 new lieutenant colonels also. Vandegrift made Colonel Gerald C. Thomas, his former operations officer, the new division chief of staff, and had a short time earlier given Edson the 5th Marines. Many of the older, senior officers, picked for the most part in the order they had joined the division, were now sent back to the States. There they would provide a new level of combat expertise in the training and organization of the many Marine units that were forming. The air wing was not quite ready yet to return its experienced pilots to rear areas, but the vital combat knowledge they possessed was much needed in the training pipeline. They, too—the survivors—would soon be rotating back to rear areas, some for a much-needed break before returning to combat and others to lead new squadrons into the fray.
Japanese Model 4 (1919) 150mm Howitzer