On 4 April 1862, Major General George McClellan marched his 121,500-strong Army of the Potomac from Fort Monroe toward Richmond. Blocking his path were Major General John B. Magruder's Warwick-Yorktown Line fortifications and the Confederate ironclad CSS Virginia. Despite outnumbering Magruder almost four to one, McClellan was tricked by Magruder's bluff of strength and halted his advance. Yorktown, the scene of