18. McClellan now formed the design of retiring to a point on the James below Richmond. Before the movement fairly began, General Lee, on the 25th of June, struck the right wing of the Union army at Oak Grove, and a hard-fought battle ensued. On the next day another engagement occurred at Mechanicsville, and the Federals won the field. On the following morning Lee renewed the struggle at Gaines's Mill, and came out victorious. On the 29th McClellan's army was attacked at Savage's Station and again in the White Oak Swamp--but the Confederates were kept at bay. On the 30th was fought the desperate battle of Glendale, or Frazier's Farm. On that night the Federal army reached Malvern Hill, twelve miles below Richmond. General Lee determined to carry the place by storm. On the morning of the 1st of July the whole Confederate army rushed forward to the assault. All day long the struggle for the possession of the high grounds continued. Not until nine o'clock at night did Lee's columns fall back exhausted. For seven days the roar of battle had been heard almost without cessation. 19. On the 2d of July McClellan retired with his army to Harrison's Landing, a few miles down the river; and the great campaign was at an end. The Federal army had lost more than fifteen thousand men, and the losses of the Confederates had been still greater. [Sidenote: Cedar Mountain.] 20. General Lee now formed the design of capturing the Federal capital. The Union troops between Richmond and Washington were under command of General John Pope. Lee moved northward, and, on the 20th of August, Pope retreated beyond the Rappahannock. Meanwhile, General Banks was attacked by Stonewall Jackson at Cedar Mountain, where nothing but hard fighting saved the Federals from a rout. 21. Jackson next dashed by with his division, on a flank movement to Manassas Junction, where he made large captures. Pope then threw his army between the two divisions of the Confederates. On August 28th and 29th, there was terrible fighting on the old Bull Run battle-ground. At one time it seemed that Lee's army would be defeated; but Pope's reinforcements were withheld by General Porter, and on the 31st the Confederates struck the Union army at Chantilly, winning a complete victory. Pope withdrew his broken columns as rapidly as possible, and found safety within the defences of Washington. [Sidenote: Lee in Maryland.]