On 25 June 1950, North Korea invaded South Korea. Two days later, President Harry S. Truman authorized U.S. naval and air operations south of the 38th parallel.
On 21 June 1919, German Rear Admiral Ludwig von Reuter ordered his men to scuttle the German High Seas Fleet, interned at Scapa Flow, Scotland, in violation of the Treaty of Versailles.
1950 - President Harry Truman authorizes U.S. Naval and Air operations south of 38th Parallel, Korea, in support of the U.N. call to assist South Korea.