August 25th, 1864:
General Sherman has grown impatient and restless with the siege of Atlanta and the failure of his Cavalry to destroy the Confederate supply line south of Atlanta. He has devised a plan to sweep his entire army with the exception of one Corps, to the south west then move back east towards the railroad. This movement will carry them though Red Oak, Fairburn, and Palmetto. From there they will move on Jonesboro.
On the 25th, Sherman gives the order to begin the movement and late in the evening the XX Corps begins pulling back from the siege lines and moves across the Chattahoochee river. The IV Corps moves as well. They moved to the area that is now I-285 and Cascade Road. They form a line of battle facing toward the north in the direction of the Confederate stronghold of Atlanta. They will act as a rear guard to protect the remainder of the Union army as they begin their march on Jonesboro. The IV Corps will remain in the Atlanta area during the assault on Jonesboro. Sherman has also ordered all the surplus wagons and supplies to be moved from the siege lines and taken across the Chattahoochee where they will be guarded.