who was the only sitting president to lead troops in the field during his term
Commander-in-chief The amount of military detail handled personally by the President in wartime has varied dramatically.[62] George Washington, the first U.S. president, firmly established military subordination under civilian authority. In 1794, Washington used his constitutional powers to assemble 12,000 militia to quell the Whiskey Rebellionâ€”a conflict in western Pennsylvania involving armed farmers and distillers who refused to pay excise tax on spirits. According to historian Joseph Ellis, this was the "first and only time a sitting American president led troops in the field", though James Madison briefly took control of artillery units in defense of Washington D.C. during the War of 1812.[63]
List of Presidents of the United States by time in office William Henry Harrison spent the shortest time in office, and Franklin D. Roosevelt spent the longest. He is the only president to have served more than two terms. Following ratification of the Twenty-second Amendment in 1951, presidents—beginning with Dwight D. Eisenhower—have been ineligible for election to a third term or for election to a second full term after serving more than two years of a term to which some other person was elected president. The amendment contained a grandfather clause that explicitly exempted the incumbent president—then Harry S. Truman—from the new term limitations.