CHAPTER XX.

Advance of General McClellan toward Centreville; his Report.—Our
Forces ordered to the Peninsula.—Situation at Yorktown.—Siege by
General McCellan.—General Johnston assigned to Command; his
Recommendation.—Attack on General Magruder at Yorktown.—Movements
of McClellan.—The Virginia.—General Johnston retires.—Delay at
Norfolk.—Before Williamsburg.—Remark of Hancock.—Retreat up the
Peninsula.—Sub-terra Shells used.-Evacuation of Norfolk.—Its
Occupation by the Enemy.