Battle of Chattanooga, last fought by Grant and Sherman together. Why was its outcome significant ?

Answer 1

This battle enabled the Union to advance further into the Confederacy, especially to Atlanta.

http://www.nps.gov/hps/abpp/battles/tn024.htm

http://www.aotc.net/Chattanooga.htm

Answer 2

O.K. ...my answer was correct, but at this time, 1863, this Battle was also a Union victory ?

Answer 3

Yes.