 Complete the following phrase:  Hyakutakes soldiers conducted several assaults over three days at various locations around the Lunga perimeter. Along the Matanikau River, the principal river flowing through what is now central Honiara, tanks attacked in pairs across the sandbar at the mouth of the river behind a barrage of artillery. Artillery, including anti-tank guns, quickly destroyed all nine tanks. At the same time, four battalions of Marine artillery, totalling 40 howitzers, fired over 6,000 rounds into the area between Point Cruz and the Matanikau, causing heavy casualties in Nomasu Nakagumas infantry battalions as they tried to approach the Marine lines. Both sides incurred heavy losses during the events of the overall battle, especially the Japanese attackers. After an attempt to deliver further reinforcements failed during the Naval Battle of Guadalcanal in November 1942, Japan conceded defeat in the struggle for the island and 