...he city. On May 23d the Fourth Corps, under Keyes, crossed the Chickahominy at Bottom's Bridge and took position at a place called Seven Pines, some five miles from the city; the Third Corps, under Heintzelman , followed. The Chickahominy now divided McClellan's army into two parts. Two of his corps were on the south, and three-Sumner's, Franklin's, and Porter's — on the north side, McClellan's he...