In the morning, 7 Japanese cruisers and 1 destroyer under Gunichi Mikawa departed Kavieng, New Ireland and Rabaul, New Britain, sailing south without being detected; after sundown, the force caught the Allied warships by surprise off Guadalcanal in the Solomon Islands; the Battle of Savo Island would result in the sinking of 3 US cruisers, 1 Australian cruiser, and 1 US destroyer; 1,077 US personnel were killed in this battle. Also on this date, US Marines captured the unfinished Japanese airfield at Guadalcanal at 1600 hours, which would later come to be known as Henderson Field. The US Marines also captured Tulagi (307 Japanese killed, 3 Japanese captured, 45 Americans killed), Gavutu, and Tanambogo (476 Japanese killed, 20 Japanese and Koreans captured, 70 Americans killed) islands in the afternoon. Finally, 26 Japanese G4M bombers and 12 Zero fighters based in Rabaul, New Britain attacked US ships off Guadalcanal at 1200 hours, damaging troop transport USS George F. Elliot and destroyer USS Jarvis (14 were killed); 18 G4M and 2 Zero aircraft were lost on this mission
