General John B. Hood was marching through northern Alabama on his way to an invasion of Union-held Tennessee. His army had departed northwest from the vicinity of
Atlanta, Georgia, in late September 1864, hoping their destruction of Union supply lines would lure Major-General
William T. Sherman's Union army into battle. Sherman pursued Hood as far as
Gaylesville, Alabama, but decided to return his army to Atlanta and instead conduct a
March to the Sea through Georgia. He gave responsibility for the defense of Tennessee to Thomas at
Nashville. Hood departed from
Gadsden, Alabama, on October 22, en route to
Guntersville, Alabama, where he planned to cross the Tennessee River. However, he later learned from cavalry Brigadier-General
Phillip Roddey that crossing place was strongly guarded, while Decatur, forty miles west, was said to be "lightly guarded". Concerned over the possibility of Federal gunboats destroying any pontoon bridge he might deploy, along with the absence of
Forrest's horsemen to bring him intelligence, Hood changed his course to Decatur. ==Battle==