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 Lushunkou The Battle of Lüshunkou (; Japanese: "Ryōjunkō-no-tatakai" (旅順口の戦い ) ) was a land battle of the First Sino-Japanese War. It took place on 21 November 1894 in Lüshunkou, Manchuria (later called Port Arthur, in present-day Liaoning Province, China) between the forces of the Empire of Japan and the Empire of China. It is sometimes referred to archaically in western sources as the Battle of Port Arthur (that name is now primarily used for the opening battle of the Russo-Japanese War in 1904).