Shiloh Battlefield (Hardin County, TN). The costliest and bloodiest Civil War battle in United State history up to that period of time. More were to come unfortunately. The majority of the Civil War fighting took place in TN & VA.
Many historians have argued that Grant’s beaten army was saved only by the timely arrival of Maj. Gen. Don Carlos Buell’s Army of the Ohio near sundown on April 6. The common conception is that Grant’s men had been driven back to the landing and were about to be defeated when the lead elements of Buell’s army arrived, deployed in line and repelled the last Confederate assaults of the day.