Oliver Otis Howard was a career United States Army officer and a Union general in the Civil War. As a brigade commander in the Army of the Potomac, Howard lost his right arm while leading his men against Confederate forces at the Battle of Fair Oaks/Seven Pines in June 1862, an action which later earned him the Medal of Honor. As a corps commander, he suffered two major defeats at Chancellorsville and Gettysburg in May and July 1863, but recovered from the setbacks as a successful corps and later army commander in the Western Theater.
Howard during the Civil War
Maj. Gen. Oliver Otis Howard c. 1862-1864
Monument to Howard in Gettysburg, Pennsylvania
Major General William T. Sherman, Commanding Military Division of the Mississippi, and his Generals, 1. Maj. Gen. O. O. Howard; 2. Maj. Gen. John A. Logan; 3. Maj. Gen. William B. Hazen; 4. Maj. Gen. William T. Sherman; 5. Maj. Gen. Jefferson C. Davis; 6. Maj. Gen. Henry Warner Slocum; 7. Maj. Gen. Joseph A. Mower; 8. Maj. Gen. Francis P. Blair Jr. (possibly cut in)
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