Andrew Atkinson Humphreys, was a career United States Army officer, civil engineer, and a Union General in the American Civil War. He served in senior positions in the Army of the Potomac, including division command, chief of staff, and corps command, and was Chief Engineer of the U.S. Army.
Andrew A. Humphreys
Humphreys, second from the right, and President Abraham Lincoln after the Battle of Antietam
General Humphrey charging at the Battle of Fredericksburg, by Alfred Waud
Generals Andrew A. Humphreys, George G. Meade and staff in Culpeper, Virginia, outside Meade's headquarters, 1863
The Army of the Potomac was the primary field army of the Union Army in the Eastern Theater of the American Civil War. It was created in July 1861 shortly after the First Battle of Bull Run and was disbanded in June 1865 following the surrender of the Confederate Army of Northern Virginia in April.
Generals of the Army of the Potomac at Culpeper, Virginia in September 1863, including (from left to right): Gouverneur K. Warren, William H. French, George G. Meade, Henry J. Hunt, Andrew A. Humphreys, and George Sykes
The Army of the Potomac – Our Outlying Picket in the Woods, an illustration of the Army of the Potomac by Winslow Homer published in Harper's Weekly on June 7, 1862
Grand Review of the Army of the Potomac, an October 1863 illustration by Thomas Nast in Harper's Weekly
An illustration of the Army of the Potomac celebrating Saint Patrick's Day with a steeplechase race among the Irish Brigade, drawn by Edwin Forbes on March 17, 1863