sentences:  From August 19 to 25 the front conducted amphibious assault operations near the port of Kholmsk, and combined amphibious and airborne assault operations near the port of Korsakov.By August 25, Soviet forces had captured the administrative centre of Sakhalin, Yuzhno-Sakhalinsk.By early September, Japanese forces ended their resistance, but due to slow Soviet advances on Sakhalin, the planned operation on the Japanese island of Hokkaidō was never carried out.