Crater

Fought on Saturday, July 30, 1864, the Battle of the Crater formed one episode within the larger Siege of Petersburg during the American Civil War. On one side stood the Confederate Army of Northern Virginia under General Lee, while the Union Army of the Potomac, led by Major General George G. Meade, took the field under the watchful eye of Lieutenant General Ulysses S. Grant, the general-in-chief.

Weeks of tunneling and planning came to a head that day when Union troops detonated a mine positioned opposite the sector held by Major General Ambrose E. Burnside's IX Corps. The blast tore open a hole in Petersburg's Confederate defenses, yet what should have handed the Union a clear opening instead triggered a swift collapse of its own attacking position. Wave after wave of Union soldiers poured toward the opening and around it, but most simply gathered in disorganized clusters at the bottom of the pit itself. Grant later called this botched assault the saddest affair he had witnessed during the entire war.

Confederate forces rallied swiftly, mounting a series of counterattacks under Brigadier General William Mahone. They managed to close the gap in their lines, driving back the Union troops at a heavy cost in casualties. Among the hardest hit was the division of black soldiers commanded by Brigadier General Edward Ferrero, which suffered severe losses. Historians have suggested this engagement represented Grant's strongest opportunity to bring the Petersburg siege to a close, yet the two armies instead dug in for eight more months of warfare fought from trenches.

In the aftermath, Burnside lost his command over his part in the disaster and never held a command position again. Meanwhile, both Ferrero and General James H. Ledlie had spent the fighting sheltered in a bunker well behind the front lines, drinking liquor rather than directing their men. A court of inquiry that September condemned Ledlie's conduct, and by December, acting on Grant's orders, Meade had effectively pushed him out of the Army altogether. Ledlie made his departure official on January 23, 1865, when he submitted his resignation.

Background

Petersburg, Virginia held enormous strategic weight during the Civil War because four southern rail lines converged there before continuing north to Richmond, the Confederate capital. Nearly all supplies bound for General Lee's forces and Richmond passed through this junction, which is why Federal commanders viewed the city as Richmond's rear entrance and a target essential to conquer. This standoff became known as the siege of Petersburg, though "siege" understates what actually occurred: the two armies dug in behind elaborate fortifications and trench networks stretching over twenty miles, running from the earlier Cold Harbor battleground down past Petersburg itself, making the conflict closer to sustained trench warfare.

Grant's June 15 push to capture Petersburg had been repelled by Lee, and afterward neither side could budge the other. Still smarting from the costly frontal assault at Cold Harbor, Grant grew increasingly frustrated at being pinned down by Lee's network of forts and earthworks. A solution eventually emerged from Lieutenant Colonel Henry Pleasants, who led the 48th Pennsylvania Infantry within Major General Ambrose E. Burnside's IX Corps.

Before the war, Pleasants had worked as a mining engineer in Pennsylvania, and he suggested tunneling beneath Confederate lines to place explosives directly under Elliott's Salient, a fort positioned along the middle of the Confederate First Corps front. His reasoning was straightforward: the blast would wipe out defenders in that section while tearing open a gap in the Confederate defenses. Should Union forces pour through that opening fast enough and push into the enemy's rear, the Confederates might lack the manpower to repel them, potentially leading to Petersburg's capture. Burnside, still trying to recover his standing after the 1862 defeat at Fredericksburg and his lackluster showing at Spotsylvania Court House, gave the plan his approval.

Excavation started in late June, though Grant and Meade regarded the whole enterprise skeptically, viewing it mainly as busywork to occupy restless soldiers rather than a serious military tactic. Their waning interest left Pleasants scrambling for supplies, and his men often had to scavenge wood on their own just to shore up the tunnel.

Nonetheless, the digging moved forward steadily. Soldiers hauled dirt out by hand using makeshift sledges built from cracker boxes fitted with handles, while timber salvaged from a derelict mill and an old dismantled bridge reinforced the tunnel's floor, walls, and ceiling.

As the shaft crept closer to Confederate positions, its builders angled it upward to keep moisture from becoming a problem, and a clever ventilation system supplied fresh air near the entrance. A canvas curtain separated the miners' breathing air from the atmosphere outside while still letting workers move freely in and out. Behind Union lines, well out of view, the diggers built a vertical shaft for exhaust, at the bottom of which a fire burned continuously. A wooden duct extended the tunnel's full length and opened to outside air. Heat from the fire caused stale tunnel air to rise up the exhaust shaft and escape through the chimney-like opening, and the resulting vacuum pulled fresh air in through the wooden duct all the way to where the miners were working. This design eliminated the need for extra ventilation shafts that enemy scouts might have spotted, and it also kept the tunnel's progress well hidden.

By July 17, the primary shaft had reached beneath the Confederate lines. Word of the tunneling operation eventually reached Confederate ears, yet Lee dismissed the rumors for two weeks before finally authorizing countermining efforts, which proved slow and poorly organized and never located the tunnel. General John Pegram, positioned directly above where the explosion would occur, took the danger seriously enough to construct a fresh line of trenches and artillery positions as a safeguard. Confederate soldiers also dug their own shafts hoping to intercept the Union tunnel. Pleasants detected these counter efforts and outmaneuvered them by altering the course of both the main tunnel and its side galleries while digging deeper underground.

The finished tunnel formed a T shape. Its approach shaft ran 511 feet, beginning in a low, hidden area and descending more than 50 feet below the Confederate artillery position above, which made it hard to detect. The entry

Battle

Detonation of the mine had been scheduled for sometime between 3:30 and 3:45 in the morning on July 30. Pleasants set the fuse burning at the appointed hour, but like every other component supplied for the operation, the fuses were of inferior quality, forcing his men to splice them together by hand. Minutes stretched on with no blast, and dawn's approach put the soldiers waiting at the staging areas in real danger, since Confederate positions could see them plainly. Two men from the 48th Regiment, Lt

Historic site

Visitors often make their way to this stretch of Petersburg National Battlefield, drawn by the same ground where the Crater once opened. Depressions still mark the earth, tracing the path of air shafts and collapses that reach up to a "T" shape near its far end. Beyond this spot, the park preserves numerous other locations, most of them once part of the Union lines encircling Petersburg.

Aftermath

In the wake of the fighting at the Crater, a Confederate soldier described the scene to family at home, claiming that the captured black soldiers would have been killed entirely if General Mahone had not pleaded with his men to spare them. According to this account, a fellow soldier had already killed several men before Mahone urged him, for God's sake, to stop. The soldier supposedly answered that he wanted to kill just one more, then took out a pocket knife and cut a prisoner's throat.

The Union side counted 3,798 casualties, broken down as 504 dead, 1,881 wounded, and 1,413 missing or taken prisoner. Confederate losses totaled 1,491, with 361 killed, 727 wounded, and 403 missing or captured. The United States Colored Troops under Ferrero absorbed a far greater share of the Union suffering, since many of these men were shot outright on the field or just behind the lines once captured. Civil War battles typically produced about 4.8 wounded soldiers for every one killed, but among black troops fighting at the Crater that ratio dropped sharply to 1.8 to one. Wounded prisoners, black and white alike, ended up at the Confederate hospital located at Poplar Lawn in Petersburg.

Burnside still believed another assault could succeed and asked Meade for permission to try again, but General E.O.C. Ord called the idea absurd and rejected it outright. Meade went further, filing formal charges against Burnside, and a court of inquiry that followed placed blame on him along with Brigadier Generals Ledlie, Ferrero, and Orlando B. Willcox, plus Colonel Zenas R. Bliss. On August 26, Burnside lost command of the IX Corps, with General John G. Parke stepping in as his replacement. Meade himself, though equally culpable for the defeat, avoided any immediate blame. That changed somewhat in early 1865, when the Congressional Joint Committee on the Conduct of the War cleared Burnside of wrongdoing and instead faulted Meade for altering the attack plan, though this vindication came too late to salvage Burnside's already damaged reputation. Mahone, by contrast, saw his standing rise considerably; his efforts in rallying Johnson's shaken troops helped secure the victory and cemented his reputation as one of the finest young generals serving under Lee in the war's closing years.

Grant, writing to Chief of Staff Henry W. Halleck, called it the saddest affair he had witnessed during the entire war, adding that he had never seen such a chance to capture fortifications and did not expect to see one again.

Pleasants, despite having no direct part in the battle, was widely credited for conceiving the plan and carrying it out. His eventual promotion to brevet brigadier general on March 13, 1865, specifically referenced this contribution in its citation.

Grant later testified before the Committee on the Conduct of the War, explaining that Burnside had wanted to lead with his colored division, and that this choice might well have produced success. Yet Grant sided with Meade's concerns about the plan. Meade had argued that using the sole available division of colored troops in the lead risked accusations that they were being sacrificed carelessly because no one valued their lives, an accusation that using white troops in front would avoid.

Though the Confederates won a clear tactical victory, nothing changed in the broader strategic picture of the Eastern Theater. Both armies stayed dug into their trenches, and the siege went on as before.