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Dwight D. Eisenhower
Ordered troops from the 101st Airborne Division to Little Rock to restore order and to protect the students -
J.F. Kennedy
Sent 400 Special Forces troops and 100 other U.S. military advisers to South Vietnam -
Lyndon B. Johnson
He increased U.S. military forces in Vietnam, from the present 75,000 to 125,000 -
Richard Nixon
Asks the American people to support his decision to send troops into Cambodia in response to North Vietnam's invasion of the country -
Jimmy Carter
In his State of the Union Address on January 23, 1980, which stated that the United States would use military force, if necessary, to defend its national interests in the Persian Gulf. -
Ronald Reagan
Reagan ordered in more troops, and by the time the fighting was done, nearly 6,000 U.S. troops were in Grenada -
Bill Clinton
He launched a U.S.-led military mission to restore a democratic government to Haiti. -
George W. Bush
He informed the nation that he has ordered U.S. troops into Iraq, promising a "broad and concerted campaign" against Saddam Hussein's regime. -
Barack Obama
Initially 1,200 National Guard troops. In 2012, the number of troops was scaled back as the focus shifted from boots on the ground to aerial surveillance.