text: The Confederate army was not a proper unified command as the Army of the Potomac was, but simply a thrown-together collection of all the troops that could be gathered for the defense of Richmond. This contributed to the poor coordination of the army during the battles and the inability of Robert E. Lee to destroy the Union army.
  The average strength of a division in the Army of the Potomac was about 9000 men (including non-combatants) with Casey's division being the smallest at around 7000 and Morell's being the largest at 11,000 men. The average strength of Confederate divisions varied from 12,000 men (A.P. Hill's division) to 5000 men (Theophilus Holmes's division). Confederate reports listed only combat troops and excluded non-combatants such as couriers, staff officers, and wagon drivers. Jackson's command was severely understrength from the Valley campaign and his own division had less than 2000 men, most of them being in the Stonewall Brigade while the brigades of Samuel Fulkerson and John R. Jones were down to nearly regimental size and were held in reserve for most of the Seven Days Battles. Ewell's three brigades numbered 3000 men total. Jackson was reinforced with the brigade of Alexander Lawton, recently arrived from Georgia, and numbering 3500 men. This brought his total strength to around 8000 men.