
The Siege of Petersburg: The First Modern Siege
From June 1864 to April 1865, the Union and Confederate armies faced each other across 30 miles of trenches in Virginia. Petersburg anticipated the trench warfare of World War I by half a century.

Union headquarters during Sherman's March to the Sea, 1864.↗
In November 1864, William Tecumseh Sherman cut his army loose from its supply line and marched 300 miles through Georgia's heartland. He wasn't just trying to reach Savannah—he was trying to break the Confederate will to fight.
Sherman explained his theory plainly: 'We cannot change the hearts of those people of the South, but we can make war so terrible... make them so sick of war that generations would pass away before they would again appeal to it.' The March to the Sea was the deliberate application of this theory. It was not about killing Confederate soldiers. It was about demonstrating that their government could not protect them.
On November 15, 1864, Sherman burned Atlanta's military infrastructure and marched 60,000 men south and east, cutting all supply lines behind him. The army lived off the land. The 'bummers' ranged up to 20 miles from the main columns, stripping farms and smokehouses of anything edible or militarily useful. Sherman estimated the march inflicted $100 million in damage—approximately $1.7 billion today.
Sherman's orders prohibited violence against civilians and burning of occupied dwellings; they were imperfectly enforced. But the systematic destruction was real: every railroad was not merely wrecked but heated and wrapped around trees ('Sherman's neckties'), every mill and forge dismantled. The Confederacy's ability to manufacture and move war material in Georgia was eliminated in six weeks.
As Sherman's army moved, word spread ahead that the Confederate government could not stop 60,000 Union soldiers from walking through its heartland. Confederate enlistments collapsed; desertions rose. Letters from Georgia farms reached Confederate soldiers at Petersburg telling them their families were exposed. Sherman reached Savannah on December 21. The march had taken 32 days and cost fewer than 2,000 casualties.
Random House, 1980
Random House, 1995
UNC Press, 2006

From June 1864 to April 1865, the Union and Confederate armies faced each other across 30 miles of trenches in Virginia. Petersburg anticipated the trench warfare of World War I by half a century.

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