"The Corps." The academy has produced just under 65,000 alumni, including two Presidents of the United States: Ulysses S. Grant and Dwight D. Eisenhower; the president of the Confederate States of America, Jefferson Davis; and three foreign heads of state: Anastasio Somoza Debayle of Nicaragua, Fidel V. Ramos of the Philippines, and José María Figueres of Costa Rica. Alumni currently serving in public office include Senator Jack Reed, Governor of Nebraska David Heineman, Governor of Louisiana John Bel Edwards, Congressmen Warren Davidson, Mark Green, Brett Guthrie, John Shimkus and Steve Watkins. The academy has produced many notable generals during its 212 years. During the Civil War, graduates included John Bell Hood, Stonewall Jackson, Ulysses S. Grant, Robert E. Lee, George McClellan, Simon Bolivar Buckner, James Longstreet, George G. Meade, Phillip Sheridan, William Tecumseh Sherman, J.E.B. Stuart and Oliver O. Howard. George Armstrong Custer graduated last in his class of 1861. The Spanish–American War saw the first combat service of Lt. (later, Brigadier General) John "Gatling Gun" Parker, the first Army officer to employ machine guns in offensive fire support of infantry. During World War I, the academy produced General of the Armies John J. Pershing, and Major Generals Charles T. Menoher and Mason Patrick. West Point was the alma mater of many notable World War II generals, Henry H. Arnold, Omar Bradley, Mark Wayne Clark, Robert L. Eichelberger, James M. Gavin, Leslie Groves, Douglas MacArthur, George S. Patton, Joseph Stilwell, Maxwell D. Taylor, James Van Fleet, Jonathan Mayhew Wainwright IV, and Simon Bolivar Buckner, Jr. the highest ranking General to be killed in combat during World War II, with many of these graduates also serving in commanding roles in the Korean War. During the Vietnam War, notable graduates general officers included Creighton Abrams, Hal Moore, and William Westmoreland. West Point also produced some famous generals and statesmen of recent note including John Abizaid, Stanley A. McChrystal, Wesley Clark, Alexander Haig, Barry McCaffrey, Norman Schwarzkopf, Jr., Brent Scowcroft, Lloyd Austin, and former Director of the Central Intelligence Agency, retired General David Petraeus. A total of 76 graduates have been awarded the Medal of Honor. West Point has produced 18 NASA astronauts, including five who went to the Moon. Other noted alumni include Jim Kimsey, founder of AOL; Bob McDonald, CEO of Procter & Gamble who was later nominated to be the Secretary of Veteran Affairs; Alex Gorsky, CEO of Johnson &