Rain poured down on the 8th, all day long, virtually stopping all forward progress, but not halting the close-in fighting around the Japanese pocket. The enemy troops finally retreated, attempting to escape the gradually encircling Marines. They smashed into the raider’s position nearest to their escape route. A wild hand-to-hand battle ensued and a few Japanese broke through to reach and cross the river. The rest died fighting.
_More than 200 Japanese soldiers alone were killed in a frenzied attack in the sandspit where the Tenaru River flows into Ironbottom Sound (Sealark Channel)._]
On the 9th, Whaling’s force, flanked by the 2d and then the 1st Battalion, 7th Marines, crossed the Matanikau and then turned and followed ridge lines to the sea. Puller’s battalion discovered a number of Japanese in a ravine to his front, fired his mortars, and called in artillery, while his men used rifles and machine guns to pick off enemy troops trying to escape what proved to be a death trap. When his mortar ammunition began to run short, Puller moved on toward the beach, joining the rest of Whaling’s force, which had encountered no opposition. The Marines then recrossed the Mantanikau, joined Edson’s troops, and marched back to the perimeter, leaving a strong combat outpost at the Matanikau, now cleared of Japanese. General Vandegrift, apprised by intelligence sources that a major Japanese attack was coming from the west, decided to consolidate his positions, leaving no sizable Marine force more than a day’s march from the perimeter. The Marine advance on 7-9 October had thwarted Japanese plans for an early attack and cost the enemy more than 700 men. The Marines paid a price too, 65 dead and 125 wounded.
There was another price that Guadalcanal was exacting from both sides. Disease was beginning to fell men in numbers that equalled the battle casualties. In addition to gastroenteritis, which greatly weakened those who suffered its crippling stomach cramps, there were all kinds of tropical fungus infections, collectively known as “jungle rot,” which produced uncomfortable rashes on men’s feet, armpits, elbows, and crotches, a product of seldom being dry. If it didn’t rain, sweat provided the moisture. On top of this came hundreds of cases of malaria. Atabrine tablets provided some relief, besides turning the skin yellow, but they were not effective enough to stop the spread of the mosquito-borne infection. Malaria attacks were so pervasive that nothing short of complete prostration, becoming a litter case, could earn a respite in the hospital. Naturally enough, all these diseases affected most strongly the men who had been on the island the longest, particularly those who experienced the early days of short rations. Vandegrift had already argued with his superiors that when his men eventually got relieved they should not be sent to another tropical island hospital, but rather to a place where there was a real change of atmosphere and climate. He asked that Auckland or Wellington, New Zealand, be considered.