<prompt> Bhala okuqhubekayo kwalesi sigaba - UWilliamson walulama ngesikhathi sokubamba iqhaza emkhankasweni waseVicksburg kanye nokuvinjezelwa kweVicksburg okwalandela. Ngemuva kokuwa kwedolobha, wathatha umyalo we-3rd Brigade, 1st Division, XV Corps kuze kube ngoSepthemba, 1863 wabe eseyalela i-2nd Brigade, 1st Division, XV Corps eMpini yaseChattanooga. Ibutho likaWilliamson, elaliholwa nguPeter J. Osterhaus lalifakwe okwesikhashana emandleni kaJoseph Hooker futhi labamba iqhaza eMpini yaseLookout Mountain  <response>: . futhi. I-division yabuyiselwa e-Army of the Tennessee futhi uWilliamson wahola i-2nd Brigade ngesikhathi se-Atlanta Campaign. Empini yaseJonesborough walimala esandleni. NgoDisemba 19, 1864 wathola ukukhushulwa kwe-brevet kwaba yi-brigadier general of U.S. Volunteers, ngoJanuwari 13, 1865 ukukhushulwa okugcwele kwaba yi-brigadier general futhi ngoMashi 13, 1865 ukukhushulwa kwe-brevet kwaba yi-major general yamavolontiya. Ngesikhathi esifushane ehlobo lika-1865 wayephethe isiFunda saseSt. Louis futhi wakhululwa emsebenzini wokuzithandela ngo-Agasti 24, 1865, kodwa wayehamba uhambo lokuhlola izikhundla zamasosha eNtshonalanga futhi akazange athole kuze kube yilapho ebuya ngo-Okthoba 1865. 