三川軍一
Taking the Japanese by surprise, the Allied landing forces accomplished their initial objectives of securing Tulagi and nearby small islands, as well as an airfield under construction at Lunga Point on Guadalcanal, by nightfall on August 8. That night, as the transports unloaded, the Allied warships screening the transports were surprised and defeated by an Imperial fleet of seven cruisers and one destroyer, commanded by Japanese Vice Admiral Gunichi Mikawa. One Australian and three U.S. cruisers were sunk and one other U.S. cruiser and two destroyers were damaged in the Battle of Savo Island. Rear Admiral Richmond K. Turner withdrew all remaining Allied naval forces by the evening of August 9 without unloading all the heavy equipment, provisions, and troops from the transports, although most of the divisional artillery was landed, consisting of thirty-two 75 mm and 105 mm howitzers. Only five days' rations were landed.