The Siege of Petersburg lasted nine and a half months. It stretched across roughly 30 miles of trenches south of Richmond, Virginia, from the summer of 1864 into the spring of 1865. It was not a siege in the classical sense. There was no castle, no drawbridge, and no white flag raised from a wall. It was a slow strangulation.
Ulysses Grant’s strategy was simple and brutal. He planned to hit the Confederate Army continuously, refusing to disengage after defeats the way his predecessors had. He understood that the North could replace its losses in men and material. The South could not. That arithmetic, applied relentlessly, was designed to end the war.
The Overland Campaign that preceded Petersburg was devastating. In six weeks of fighting at the Wilderness, Spotsylvania Courthouse, and Cold Harbor, Grant lost roughly 65,000 men. Lee lost near 33,000. The difference was that Grant absorbed his losses and kept moving south. Lee had almost nothing left to absorb again.
Petersburg sat 23 miles south of Richmond. It was a modest city of about 18,000 people, but it was the junction point for five railroads that kept the Confederate capital alive. Cut those arteries, Grant reasoned, and Richmond starved. Petersburg was the lock, and Grant meant to find the key.
In mid-June of 1864, Grant moved the Army of the Potomac south across the James River. More than 100,000 men, their artillery, horses, and supply wagons crossed a pontoon bridge nearly 2,000 feet long that engineers built in less than eight hours. Lee was genuinely confused about where Grant had gone, and that uncertainty cost the Confederacy what may have been their last real chance to win the war.
For three days, from June 15th through 18th, Petersburg was held by a skeleton force under General P. G. T. Beauregard. He had roughly 2,200 men when Union General William Baldy Smith arrived with 16,000 soldiers. Smith moved cautiously, convinced himself the position was stronger than it was, and wasted the afternoon. More Union troops arrived, but the assaults remained disorganized. By the time Lee understood what was happening and moved his army south, the window had closed.
The earthworks that went up around Petersburg were not temporary. The Confederates dug in along a curving line that stretched for nearly 30 miles. The Union lines paralleled them. The space between the two, sometimes several hundred yards, sometimes less than 50 feet, became some of the most dangerous ground in American history.
The primary trench was typically five to six feet deep, narrow enough that two men passing each other had to turn sideways. Walls were shored up with planks from dismantled buildings and fence rails. Behind the main line ran communication trenches. Forward of the main line, both sides pushed out rifle pits where sharpshooters worked in pairs.
The sharpshooters were a plague unlike anything the men had encountered in open field fighting. One Confederate marksman is documented to have killed a Union soldier who simply raised his canteen over the parapet to fill it from rain. Not his head, his canteen. The bullet came through the opening, found the man’s arm, followed it to his chest, and killed him. Men learned to move only at night, to cook only at night, to dig only at night.
The Virginia summer heat made everything worse. The trenches cut through red clay that turned to soup in the rain and concrete in the sun. Water was scarce and often brackish. Dysentery spread through the camps on both sides. Men lost weight they could not afford to lose. They developed sores that would not close. They slept in shifts because night raids meant you could never be fully unconscious for long.
Grant understood that sitting still was not by itself a strategy. Throughout the summer, fall, and winter, Union forces conducted operations designed to extend their line further west and cut Confederate supply lines one by one. In late August of 1864, Union forces under Gouverneur Warren seized a stretch of the Weldon Railroad south of Petersburg and held it against furious counterattacks at Globe Tavern.
What happened on the morning of July 30th, 1864, had no precedent in American military history. A regiment of Pennsylvania coal miners, the 48th Pennsylvania Infantry, had been sitting in a forward position near a Confederate fort called Elliott’s Salient. Their former mine supervisor, Lieutenant Colonel Henry Pleasants, proposed digging a tunnel underneath the Confederate position and blowing it up.
The engineering staff dismissed the idea as impossible. Pleasants did it anyway. Without proper surveying equipment, his men dug a shaft that ran approximately 510 feet from the Union lines to a point directly beneath Elliott’s Salient. They worked in shifts around the clock, hauling the displaced dirt out in cracker boxes. It took a month. They packed the chamber with approximately 8,000 pounds of black powder and waited for permission to light it.
The plan was to blow the fort, shatter the Confederate line, and send a fresh division through the gap. A division of United States Colored Troops had been specially trained for the assault. At 4:44 on the morning of July 30th, the fuse was lit. Nothing happened. Two men volunteered to go into the tunnel and found the fuse had gone out at a splice. They relit it and ran.
The ground beneath Elliott’s Salient erupted. The explosion killed or buried approximately 300 Confederate soldiers instantly. It left a crater 170 feet long, 60 feet wide, and 30 feet deep. For a few minutes, there was nothing in front of the Union lines except stunned silence and a hole in the ground.
Then everything went wrong. The division of Black troops trained for the assault was pulled from the lead at the last minute by commanders who worried that sending Black soldiers into a dangerous assault would look as though the Union was using them as cannon fodder. The replacement division was untrained for the specific demands of the assault and led by a general who spent the battle in a bomb-proof shelter behind the lines drinking rum.
The Union soldiers who went forward poured into the crater rather than around it. They milled around in the hole while Confederate soldiers recovered and began shooting down into the depression from the rim. When the Black division finally did go in, they went in late into a collapsed tactical situation. Several of the Black soldiers who surrendered or were captured were shot on the spot. The Battle of the Crater killed, wounded, or captured nearly 4,000 Union soldiers. It accomplished nothing.
By autumn, the rhythms of life in the trenches had calcified into something that barely resembled military service. When officers were not watching, opposing pickets sometimes shouted across the lines to trade tobacco for coffee. Newspapers changed hands. In documented instances, men on opposing sides played cards together in the space between the lines during lulls everyone understood to be temporary.
But the humanity lived alongside something much darker. The same men who traded tobacco in the afternoon were sometimes ordered to raid each other’s lines at night. These raids were conducted with bayonets and knives because a rifle shot would alert the whole trench. Men who had never considered themselves capable of killing in silence found out they were wrong.
The Confederate situation was deteriorating in ways that went beyond morale. By the fall of 1864, Lee’s army was running short of nearly everything simultaneously. Food was the most pressing problem. A soldier’s daily ration by late 1864 was documented at approximately one-quarter pound of meat, often rancid, and a small amount of cornmeal. There were days when nothing was issued at all.
Rats became a food source mentioned without irony in letters home. One Confederate soldier described a dinner of boiled rat that tasted with enough seasoning something like squirrel. The horses and mules were dying in the traces. When an artillery horse died, men quarreled over the carcass. Surgeons wrote dispatches describing men too weak to stand watch for more than an hour.
Desertion accelerated. In the final months, Confederate soldiers were walking into Union lines at a rate that alarmed Lee enough to write personally to Jefferson Davis. Some came in groups of 10 or 20 making no effort at concealment. Many had been fighting for three years. What had broken was not their nerve, but their belief that any of it still meant anything.
On the Union side, Lincoln’s re-election in November of 1864 mattered enormously. Lincoln had run against McClellan on a platform that included the possibility of a negotiated peace. Lincoln’s victory and the soldier vote he carried by enormous margins removed that possibility. The man in the trenches had voted to keep fighting.
The winter at Petersburg was the worst kind of misery because it was also the most static. The fighting did not stop entirely. There were raids, mortar duels, and constant sniper fire. A Union soldier from Maine wrote in his diary that he had slept wearing his full kit, including his cartridge box, for 19 consecutive nights. A Confederate soldier from Georgia wrote that he had not changed his socks in six weeks because he did not own another pair.
Lee made one major offensive attempt in the final weeks of the siege. On March 25th, 1865, Confederate forces under General John B. Gordon attacked Fort Stedman, a Union strong point on the eastern end of the line. Gordon’s men seized the fort and several adjacent positions. They could not hold it. Union reserves responded faster than expected, and the Confederacy lost approximately 5,000 men it could not afford.
The final blow came in the southwest. Grant sent Phil Sheridan with a strong cavalry force and a corps of infantry on a sweeping movement around Lee’s right flank toward a crossroads called Five Forks, where the Southside Railroad was within reach. Lee sent George Pickett with approximately 19,000 men to hold Five Forks at all costs.
On April 1st, 1865, Sheridan’s infantry hit Pickett’s position late in the afternoon. Pickett was two miles from the battle at a shad bake organized by General Thomas Rosser. The acoustics of the terrain masked the sound of the engagement. He did not know his men were being overrun until it was too late. The Southside Railroad was cut.
Grant ordered a general assault along the entire front for the following morning, April 2nd. The attack began before dawn and broke through almost immediately at multiple points. A.P. Hill, one of Lee’s most reliable corps commanders, rode toward the breakthrough and was shot from his horse by two Union soldiers. He died almost instantly.
Jefferson Davis was in church in Richmond when a courier arrived with Lee’s dispatch. The line had broken. Petersburg could not be held. Richmond had to be evacuated. That night, Confederate officials destroyed what they could, and the fires spread beyond what anyone intended. When Union troops entered Richmond on the morning of April 3rd, they found significant portions of the Confederate capital burning and Black residents of the city in the streets cheering their arrival.
Lee moved west with what remained of his army, perhaps 35,000 men, exhausted and hungry. Grant moved in parallel, cutting off the roads ahead. The campaign that ended at Appomattox Courthouse on April 9th was in many ways a continuation of Petersburg’s logic. Lee could not get away because his men were too worn down to march fast enough, and they were too worn down because nine and a half months in the trenches had consumed them from inside.
The numbers from Petersburg resist easy absorption. The Union Army sustained approximately 42,000 casualties during the siege. Confederate casualties are harder to verify, but estimates run between 28,000 and 35,000. Those numbers do not include the men who survived but were permanently disabled. They do not include the men who appeared to survive intact and spent the rest of their lives unable to sleep without first checking the walls were solid.
The Siege of Petersburg was the first industrialized trench war in American history. The tactical problems it created had no satisfying answers in doctrine still oriented around maneuver and open field engagement. The Union Army solved the problem by cutting supply lines and grinding the defenders down. That is not a tactical solution. It is a logistical one, and it required time measured in seasons.
The Black soldiers who fought at Petersburg, present in substantial numbers and composing a significant portion of the Army of the James, served in the battles at the Crater and in the final assault of April 2nd. They were largely erased from the commemorative versions of the siege written in the postwar South and minimized in the ones written in the postwar North. They were at Petersburg. They died at Petersburg. Their names are in the records, if you look.
Today, the Petersburg National Battlefield preserves portions of the original trench lines. You can walk sections of the Confederate earthworks and Union parallels. What you cannot get is the experience of being there for 300 days, of knowing that today is essentially the same as yesterday, and tomorrow will be the same as today, except that at some point during one of those days, a bullet or shell fragment is going to decide something about your life that you have no vote on.
The men who stood in those trenches were not abstractions. They were farmers from Ohio and factory workers from Massachusetts and immigrants from Germany and Ireland. They were Virginia boys and Georgia boys and the sons of South Carolina planters. They were 20 years old, most of them. Some were 15. On both sides, they were hungry and frightened and exhausted, and they stayed because they had nowhere else to go.
The Siege of Petersburg does not yield a clean moral. It does not resolve into the kind of story where courage is rewarded and cowardice is punished. What it yields is the fact of what men will endure when they are put into a situation that has no dignified exit and told to remain. They remain. They remain for nine and a half months, and then the line breaks all at once in a single morning, and the war that has been ending since Gettysburg finally, definitively ends.