During the Atlanta Campaign, General William T. Sherman reorganized the cavalry of the armies of the Cumberland and Tennessee into four "columns", with no overall commander (the columns commanded by Stoneman, Kilpatrick, Edward McCook, and Israel Garrard). The cavalry continued to perform in a mediocre-at-best fashion, failing an abortive raid to free Andersonville prison camp and being repeatedly defeated by Joseph Wheeler's Confederate cavalry in a series of fights in central Georgia. During Sherman's March to the Sea, Kilpatrick's division remained with the army, serving again with a lack of real distinction, while the rest of the cavalry went north with George Thomas to repel John B. Hood's invasion of Tennessee, taking part in the actions at Spring Hill and Murfreesboro.