Peninsula Campaign - Background

Background

On August 20, 1861, Maj. Gen. George B. McClellan formed the Army of the Potomac, with himself as its first commander. During the summer and fall, McClellan brought a high degree of organization to his new army, and greatly improved its morale by his frequent trips to review and encourage his units. It was a remarkable achievement, in which he came to personify the Army of the Potomac and reaped the adulation of his men. He created defenses for Washington that were almost impregnable, consisting of 48 forts and strong points, with 480 guns manned by 7,200 artillerists.

On November 1, 1861, Gen. Winfield Scott retired and McClellan became general in chief of all the Union armies. The president expressed his concern about the "vast labor" involved in the dual role of army commander and general in chief, but McClellan responded, "I can do it all."

On January 12, 1862, McClellan revealed his intentions to transport the Army of the Potomac by ship to Urbanna, Virginia, on the Rappahannock River, outflanking the Confederate forces near Washington, and proceeding 50 miles (80 km) overland to capture Richmond. On January 27, Lincoln issued an order that required all of his armies to begin offensive operations by February 22, Washington's birthday. On January 31, he issued a supplementary order for the Army of the Potomac to move overland to attack the Confederates at Manassas Junction and Centreville. McClellan immediately replied with a 22-page letter objecting in detail to the president's plan and advocating instead his Urbanna plan, which was the first written instance of the plan's details being presented to the president. Although Lincoln believed his plan was superior, he was relieved that McClellan finally agreed to begin moving, and reluctantly approved. On March 8, doubting McClellan's resolve, Lincoln called a council of war at the White House in which McClellan's subordinates were asked about their confidence in the Urbanna plan. They expressed their confidence to varying degrees. After the meeting, Lincoln issued another order, naming specific officers as corps commanders to report to McClellan (who had been reluctant to do so prior to assessing his division commanders' effectiveness in combat, even though this would have meant his direct supervision of twelve divisions in the field).

Before McClellan could implement his plans, the Confederate forces under General Joseph E. Johnston withdrew from their positions before Washington, assuming new positions south of the Rappahannock, which completely nullified the Urbanna strategy. McClellan retooled his plan so that his troops would disembark at Fort Monroe, Virginia, and advance up the Virginia Peninsula to Richmond. However, McClellan came under extreme criticism from the press and the Congress when it was found that Johnston's forces had not only slipped away unnoticed, but had for months fooled the Union Army through the use of Quaker Guns.

A further complication for the campaign planning was the emergence of the first ironclad warship, CSS Virginia, which threw Washington into a panic and made naval support operations on the James River seem problematic. In the Battle of Hampton Roads (March 8–9, 1862), Virginia defeated wooden U.S. Navy ships blockading the harbor of Hampton Roads, Virginia, including the sloop USS Cumberland, and the frigate USS Congress on March 8, calling into question the viability of any of the wooden ships in the world. The following day, the USS Monitor ironclad arrived at the scene and engaged with the Virginia, the famous first duel of the ironclads. The battle, although inconclusive, received worldwide publicity. After the battle, it was clear that ironclad ships were the future of naval warfare. Neither ship severely damaged the other; the only net result was keeping Virginia from attacking any more wooden ships.

On March 11, 1862, Lincoln removed McClellan as general-in-chief, leaving him in command of only the Army of the Potomac, ostensibly so that McClellan would be free to devote all his attention to the move on Richmond. Although McClellan was assuaged by supportive comments Lincoln made to him, in time he saw the change of command very differently, describing it as a part of an intrigue "to secure the failure of the approaching campaign."