The Seven Days’ Battles, fought June 25–July 1, 1862, were the decisive engagements of theduring the (1861–1865). Union general had attempted to march his up the Peninsula between the York and rivers but was stalled first at Yorktown, then at Williamsburg, and finally at the fierce battle at (May 31–June 1), during which Confederate general was severely wounded. General took command of the and, to prevent a siege of the Confederate capital at , went on the offensive. The first of Lee’s attacks occurred on June 26, and after two days of fighting he forced McClellan to abandon his supply line and begin a retreat back to the James River. Lee pursued and came close to destroying the Union army on June 30 at . He suffered a major tactical defeat the next day at , but McClellan ensured a Confederate strategic victory by continuing his retreat to Harrison’s Landing. The battles ended McClellan’s campaign to take Richmond, as well as the last chance to end the war under circumstances that might resemble the status quo of 1860.