After the victory, they moved to eastern Arkansas where they joined 3rd Brigade, 11th Division, Right Wing 13th Army Corps (Old), Dept. of Tennessee, until reorganized the division became the 4th Division of Sherman's Corps during the Yazoo Expedition. In January, 1863, Grant reorganized the Army of the Tennessee and the 9th joined the 3rd Brigade, 1st Division, XV Corps, where they served during the Battle of Jackson and Siege of Vicksburg during the latter when Elson performed the act which would later gain him the Medal of Honor. In that action, a bullet passed through his right thigh.