What areas were fought over in the war fought by the Japanese Fourth Army?
Fourth Army (Japan) The Japanese 4th Army (第4軍 , Dai-yon gun ) was an army of the Imperial Japanese Army based in Manchukuo from the Russo-Japanese War until the end of World War II.
Battle of Vella Lavella (land) The Battle of Vella Lavella was fought from 15 August – 6 October 1943 between Japan and the Allied forces from New Zealand and the United States. Vella Lavella, an island located in the Solomon Islands, had been occupied by Japanese forces early during the war in the Pacific. Following the fighting around Munda Point, the Allies recaptured the island in late 1943, following a decision to bypass a large concentration of Japanese troops of Kolombangara.