Act of 1916 contained a provision whereby the president could discharge National Guard members from the militia and draft them into the Army in the event of a war, allowing for their use overseas. This resulted in former National Guard members being discharged from the Army entirely (also losing their status as state troops) when they left service, so the 1920 amendments to the act defined the National Guard's dual role as a state and federal reserve force; the "National Guard while in the service of the United States" as a component of the Army of the United States could be ordered to active duty by the president, be deployed overseas if they so wished, and the Guardsmen would then revert to their status as state troops. The dual state and federal status proved confusing, so in 1933, the National Defense Act of 1916 was amended again. It finally severed the National Guard's traditional connection with the militia clause of the Constitution, providing for a new component called the "National Guard of the United States" that was to be a reserve component of the Army of the United States at all times. This is the beginning of the present legal basis of the National Guard. In World War I, National Guard soldiers made up 40 percent of the men in U.S. combat divisions in France. In World War II, the National Guard made up 18 divisions. One hundred forty thousand Guardsmen were mobilized during the Korean War and over 63,000 for Operation Desert Storm. They have also participated in U.S. peacekeeping operations in Somalia, Haiti, Saudi Arabia, Kuwait, Bosnia, and Kosovo and for natural disasters, strikes, riots and security for the Olympic Games when they have been in the States. Following World War II, the National Guard aviation units that had previously been part of the U.S. Army Air Corps and its successor organization, the U.S. Army Air Forces, became the Air National Guard (ANG), one of two reserve components of the newly established United States Air Force. On September 24, 1957 President Dwight D. Eisenhower federalized the entire Arkansas National Guard to ensure the safe entry of the Little Rock Nine to Little Rock Central High School the following day. Governor Orval Faubus had previously used members of the guard to deny the students entry to the school. The New York National Guard were ordered by Governor Nelson A.