The 30th Georgia Regiment reached Jackson, Mississippi, on May 14 as part of General William H.T. Walker's Brigade, marching from there to Yazoo City and on to the Big Black River (Mississippi) to join the Jackson Expedition. Under the command of Colonel Thomas W. Mangham, the regiment was ordered on July 4 to march in the rear in a retreat towards Jackson, keep up stragglers, and aid the sick and disabled. On July 7 the regiment halted at a position west of Jackson and stacked arms. On May 16 the 30th Georgia Regiment, together with the 24th Texas Regiment were successful in re-establishing a picket line that had been charged by Union forces the previous day.