Location of the Armies.
On June 3rd the Union Army, called the Army of the Potomac, lay at Falmouth, Va., on the north side of the Rappahannock River, Major-General Joseph Hooker in command.
The Confederate Army, called the Army of Northern Virginia, occupied the south bank, with headquarters at Fredericksburg, General Robert E. Lee in command.
Both armies were resting after the major engagement at Chancellorsville, in which the Confederates were victorious.
The Army of the Potomac was made up of seven infantry and one cavalry corps. It numbered at the time of the battle approximately 84,000.
The Army of Northern Virginia was made up of three infantry corps and one division of cavalry. It numbered at the time of the battle about 75,000.
Following the text is a roster of officers, which should be consulted, both for an understanding of the battle and because of the obligation to honor brave men.