Japan entered the modern age in 1868, with a new young emperor determined to make his island nation a world power. After decades of steady progress, Japan began its own practice of colonialism, defeating China in 1894. As the Japanese began to infiltrate the semi-independent Kingdom of Korea, they ran into Russian agents doing the same. Despite Japanese offers to negotiate, the Russian Tsar Nicholas II was set on war. Featuring 20 scenarios, including the climactic Battle of Tsushima, this Great War at Sea campaign covers the naval side of the Russo-Japanese War, which opened with a Japanese surprise attack on the Russian Pacific Fleet`s base at Port Arthur in northern China.