Mar 31, 1905
During the Russo-Japanese War, the entire Russian Baltic
Fleet was nearly destroyed at the Battle of Tsushima Strait（对马海战）in which only 10 of 45 Russian
warships escaped.
Reference
https://www.britannica.com/event/Russo-Japanese-War
Today - Mar 31 对马海战
Mar 31, 1905
During the Russo-Japanese War, the entire Russian Baltic
Fleet was nearly destroyed at the Battle of Tsushima Strait（对马海战）in which only 10 of 45 Russian
warships escaped.
Reference
https://www.britannica.com/event/Russo-Japanese-War