The principal object of the wide swing of Federal forces southeast from Roswell, where they crossed the Chattahoochee, was to cut the Georgia Railroad at and near Stone Mountain, thereby isolating Atlanta from the east. Pursuant to plan, Logan’s 15th Army Corps was posted at Browning’s Courthouse (Tucker) as support to Garrard’s cavalry in its move on the railroad between Stone Mountain and Decatur. On July 18, 1864, Lightburn’s brigade of Logan’s corps moved on this road with Garrard’s cavalry to Stone Mountain, their progress resisted and impeded by Wheeler’s Confederate cavalry all the way.