
Monument to the Army of the Potomac at Gettysburg
The monument to the Army of the Potomac is on Hancock Avenue (Hancock Avenue at The Angle tour map) and a marker south of the Leister House on Taneytown Road.
From the monument:
Army of the Potomac
Major General George G. Meade
Commanding
The Army consisted of Eight Corps
First Corps | Major General John F Reynolds Major General Abner Doubleday Major General John Newton |
Second Corp | Major General Winfield S. Hancock Brigadier General John Gibbon |
Third Corps | Major General Daniel E. Sickles Major General David B. Birney |
Fifth Corps | Major General George Sykes |
Sixth Corps | Major General John Sedgwick |
Eleventh Corps | Major General Oliver O. Howard |
Twelfth Corps | Major General Henry W. Slocum Brigadier General Alpheus S. Williams |
Cavalry Corp | Major General Alfred Pleasonton |
Reserve Artillery | Brigadier General Robert O. Tyler |
July 1. The First and Eleventh Corps arrived, and were engaged north, and, west of Gettysburg,and fell back to Cemetery Hill in rear of the town. The Twelfth Corps and a large part of the Third Corps arrived at the close of the day.
July 2. The remainder of the Third Corps and the Fifth and Second Corps arrived in the morning. The Sixth Corps late afternoon. The Third Corps having advanced was attacked by Longstreet’s Confederate Corps and Anderson’s Division of Hill’s Corps. The Fifth Corps, and the First Division of the Second Corps going to the support of the Third Corps an engagement ensued until nightfall when the Union forces had been driven back from their advanced position and the Confederates repulsed.
July 3. The Twelfth Corps having by order vacated a large part of its line on Culps Hill, on the night of the 2d and Johnson’s Division of Ewell’s Corps having occupied the works. The Twelfth Corps in the morning attacked and regained the lines it had previously vacated. Hill’s Corps and Pickett’s Division of Longstreets Corps in the afternoon attacked the line of the Second Corps and were repulsed with great Loss. Stuart’s Confederate Cavalry in the afternoon attacked the Second Cavalry Division and the Second Brigade Third Cavalry Division and was repulsed.
Location of the Army of the Potomac Headquarters monument at Gettysburg
The monument is south of Gettysburg on the East side of Hancock Avenue across from the High Water Mark monument. (39°48’47.7″N 77°14’07.1″W)
Monument to Headquarters of Major General George Mead

Monument to Headquarters of Major General George Meade at Gettysburg
From the marker:
Headquarters of
Major General
George G. Meade
Commanding
Army of the Potomac