In November 1939, the Soviet Union invaded Finland. Finnish soldiers on skis annihilated two tank divisions, humiliating the Russians. Charles Minot (Minnie) Dole, the president of the National Ski Patrol, saw this as a perfect example of why the U.S. Army needed mountain troops. Dole spent months lobbying the War Department to train troops in mountain and winter warfare. In September 1940, Dole was able to present his case to General George C. Marshall, the Army Chief of Staff, who caused the Army take action on Dole’s proposals to create ski units. On December 8, 1941, the Army activated its first mountain unit, the 87th Mountain Infantry Battalion (Later became an entire Regiment) at Camp Hale, Colorado.