Executive Order—Assigning U.S. Grant to the Command of the Armies of the United States
March 10, 1864
Under the authority of an act of Congress to revive the grade of lieutenant-general in the United States Army, approved February 29, 1864, Lieutenant-General Ulysses S. Grant, United States Army, is assigned to the command of the armies of the United States.
ABRAHAM LINCOLN.
Abraham Lincoln, Executive Order—Assigning U.S. Grant to the Command of the Armies of the United States Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202505