What U.S. President was a five-star general before entering politics?

Dwight D. Eisenhower (born David Dwight Eisenhower; October 14, 1890 – March 28, 1969) was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, he served as Supreme Commander of the Allied Expeditionary Force in Europe and achieved the five-star rank as General of the Army. Eisenhower planned and supervised two of the most consequential military campaigns of World War II: Operation Torch in the North Africa campaign in 1942–1943 and the D-Day invasion of Normandy in 1944.

Source: Wikipedia