In August 1945, the Soviet Union took over the control of entire Sakhalin and Kuril Islands. The Soviet attack on South Sakhalin started on August 11, 1945, about a month before the Surrender of Japan in World War II. The 56th Rifle Corps consisting of the 79th Rifle Division, the 2nd Rifle Brigade, the 5th Rifle Brigade and the 214th Tank Brigade attacked the Japanese 88th Division. Although the Red Army outnumbered the Japanese by three times, they could not advance due to strong Japanese resistance. It was not until the 113th Rifle Brigade and the 365th Independent Naval Infantry Rifle Battalion from Sovietskaya Gavan (Советская Гавань) landed on Tōrō (塔路), a seashore village of western Sakhalin on August 16 that the Soviets broke the Japanese defense line. Japanese resistance grew weaker after this landing. Actual fighting continued until August 21. However, this was relatively limited in scope. From August 22 to August 23, most of the remaining Japanese units announced truce. The Soviets completed the conquest of Sakhalin on August 25, 1945 by occupying the capital of Sakhalin, then known as Toyohara. Japanese sources claim that 20,000 civilians were killed during the invasion.