Question: When did japan go to war with russia?
Disambiguated questions and answers: question: When did the Russo-Japanese War begin?
When was the Russo-Japanese War?
When did the Soviet-Japanese War begin?
When was the Soviet-Japanese War?
When did Japan enter the Russian Civil War?
answer: 8 February 1904
8 February 1904  – 5 September 1905
August 9, 1945
August 9 – September 2, 1945
July 1918
Natural Questions answer: 8 February 1904 (from the Wikipedia article "Russo-Japanese War")