March 10, 1864
On March 10, 1864, President Abraham Lincoln issued an executive order appointing Lieutenant-General Ulysses S. Grant to command the armies of the United States.
EXECUTIVE MANSION, WASHINGTON, D.C., March 10, 1864. — Under the authority of the Act of Congress to appoint the grade of Lieutenant-General in the army, of February 29, 1864, Lieutenant-General ULYSSES S. GRANT, U.S.A., is appointed to the command of the armies of the United States.
(Signed) ABRAHAM LINCOLN.