John Alexander Logan was an American soldier and political leader. He served in the Mexican-American War and was a general in the Union Army in the American Civil War. He served the state of Illinois as a state senator, congressman and senator and was an unsuccessful candidate for Vice President of the United States with James G. Blaine in the election of 1884. As the 3rd Commander-in-Chief of the Grand Army of the Republic, he is regarded as the most important figure in the movement to recognize Memorial Day as an official holiday.