Original sentence: Parts of the fleet took part in the battles of Forts Jackson and St.Philip, Plum Point Bend, and Memphis
Edited sentence: A portion of the fleet was retained in the south part of the Mississippi River and a portion was sent north to defend agains Union movement from the north.The portion of the fleet in the south took part in the battles at Forts Jackson and St.The portion of the fleet n the north took part in the battles at Plum Point Bend, and Memphis