What areas were fought over in the war fought by the Japanese Fourth Army?
Russo-Japanese War The Russo–Japanese War (Russian: Русско-японская война , "Russko-yaponskaya voina"; Japanese: 日露戦争 "Nichirosensō"; 1904–05) was fought between the Russian Empire and the Empire of Japan over rival imperial ambitions in Manchuria and Korea. The major theatres of operations were the Liaodong Peninsula and Mukden in Southern Manchuria and the seas around Korea, Japan and the Yellow Sea.
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.