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.
Kawaguchi Detachment The Kawaguchi Detachment was an Imperial Japanese Army (IJA) formation that existed during World War II. Under the command of Major General Kiyotake Kawaguchi, the detachment consisted of the IJA's 35th Infantry Brigade and the 124th Infantry Regiment. The detachment operated independently of its parent IJA 18th Division and saw action in several campaigns, including fighting on Borneo, the Philippines and Guadalcanal.