11/02/2026
On this day in 1943, the Battle of Empress Augusta Bay ended in a victory for the U.S. Naval Forces. This naval engagement was fought at night on November 1-2 in the Solomon Islands. The battle was part of Operation Cartwheel, which aimed to isolate and surround the Japanese base at Rabaul and, if successful, construct an airfield on Bougainville. Once the Allied forces landed at Cape Torokina in Empress Augusta Bay, the naval battle began that first night. The Japanese brought a large naval force with the intention of achieving the same kind of success they had at Savo Island. By that time, most of the Allied landing craft and troop transports had withdrawn, while the Japanese fleet moved toward Cape Torokina. On November 2, the Imperial Japanese Navy was struck first by aerial attacks and then by the U.S. Navy, resulting in the division of the Japanese fleet into three groups. Although the U.S. naval forces experienced some difficulties during the battle, they remained strong and maintained communication, unlike the Japanese ships, which became separated. The Allied forces successfully prevented the Japanese from destroying transport ships and landing craft, forcing them to withdraw and suffer heavier casualties than the Allies. A few days later, the Japanese attempted to attack the Allied landing forces at Bougainville, but were unsuccessful, effectively ending the Japanese warship threat in the area. The Allied victory allowed for the establishment of a PT boat base and several airbases. By February 1944, the U.S. had more than 400 aircraft stationed on Bougainville, and before the end of the month, the Japanese air defenses around Rabaul had been defeated.
