Imperial General Headquarters in Tokyo had ordered Lieutenant General Haruyoshi Hyakutake’s _Seventeenth Army_ to attack the Marine perimeter. For his assault force, Hyakutake chose the _35th Infantry Brigade_ (Reinforced), commanded by Major General Kiyotake Kawaguchi. At the time, Kawaguchi’s main force was in the Palaus. Hyakutake selected a crack infantry regiment--the _28th_--commanded by Colonel Kiyono Ichiki to land first. Alerted for its mission while it was at Guam, the Ichiki Detachment assault echelon, one battalion of 900 men, was transported to the Solomons on the only shipping available, six destroyers. As a result the troops carried just small amounts of ordnance and supplies. A follow-on echelon of 1,200 of Ichiki’s troops was to join the assault battalion on Guadalcanal.
_On 20 August, the first Marine Corps aircraft such as this F4F Grumman Wildcat landed on Henderson Field to begin combat air operations against the Japanese._]
While the Japanese landing force was headed for Guadalcanal, the Japanese already on the island provided an unpleasant reminder that they, too, were full of fight. A captured enemy naval rating, taken in the constant patrolling to the west of the perimeter, indicated that a Japanese group wanted to surrender near the village of Kokumbona, seven miles west of the Matanikau. This was the area that Lieutenant Colonel Goettge considered held most of the enemy troops who had fled the airfield. On the night of 12 August, a reconnaissance patrol of 25 men led by Goettge himself left the perimeter by landing craft. The patrol landed near its objective, was ambushed, and virtually wiped out. Only three men managed to swim and wade back to the Marine lines. The bodies of the other members of the patrol were never found. To this day, the fate of the Goettge patrol continues to intrigue researchers.
After the loss of Goettge and his men, vigilance increased on the perimeter. On the 14th, a fabled character, the coastwatcher Martin Clemens, came strolling out of the jungle into the Marine lines. He had watched the landing from the hills south of the airfield and now brought his bodyguard of native policemen with him. A retired sergeant major of the British Solomon Islands Constabulary, Jacob C. Vouza, volunteered about this time to search out Japanese to the east of the perimeter, where patrol sightings and contacts had indicated the Japanese might have effected a landing.