Battle of Port Arthur—Japan's surprise attack on Russia

Declaration of war by Japan (three hours after the attack commenced)

Battle of Chemulpo Bay (modern Incheon, Korea)

Battle of Yalu River (modern Uiju, Korea)

Battle of Nanshan (Liaodong peninsula, just north of Port Arthur)

Battle of Te-Li-ssu (aka Battle of Wafangou)

Siege of Port Arthur begins

Battle of Yellow Sea

Battle of Liaoyang

Russia's Baltic Fleet departs European waters to reinforce the Pacific Fleet

Battle of Shaho

Surrender of Port Arthur to the Japanese

Battle of Sandepu

Battle of Mukden

Battle of Tsushima Strait (arrival of the Russian Baltic Fleet)

Japanese invasion of Sakhalin

Treaty of Portsmouth officially ends the war