By early March 1865, over eight months in the trenches around Petersburg had begun to wreck Lee's army. Plagued by disease, desertion, and a chronic lack of supplies, his force had dropped to around 50,000. Already outnumbered 2.5-to-1, he faced the daunting prospect of another 50,000 Union troops arriving as Sheridan concluded operations in the valley. Desperately needing to change the equation before Grant assaulted his lines, Lee asked Major General John B. Gordon to plan an attack on the Union lines with the goal of reaching Grant's headquarters area at City Point. Gordon began preparations and at 4:15 AM on March 25, the lead elements began moving against Fort Stedman in the northern part of the Union line.
Striking hard, they overwhelmed the defenders and soon had taken Fort Stedman as well as several nearby batteries opening a 1000-foot breach in the Union position. Responding to the crisis, Parke ordered Brigadier General John F. Hartranft's division to seal the gap. In tight fighting, Hartranft's men succeeded in isolating Gordon's attack by 7:30 AM. Supported by a vast number of Union guns, they counterattacked and drove the Confederates back to their own lines. Suffering around 4,000 casualties, the failure of the Confederate effort at Fort Stedman effectively doomed Lee's ability to hold the city.
Battle of Petersburg: The Fall of Petersburg
Sensing Lee was weak, Grant ordered the newly returned Sheridan to attempt a move around the Confederate right flank to the west of Petersburg. To counter this move, Lee dispatched 9,200 men under Major General George Pickett to defend the vital crossroads of Five Forks and the Southside Railroad, with orders to hold them "at all hazards." On March 31, Sheridan's force encountered Pickett's lines and moved to attack. After some initial confusion, Sheridan's men routed the Confederates at the Battle of Five Forks, inflicting 2,950 casualties. Pickett, who was away at a shad bake when the fighting started, was relieved of his command by Lee. With the Southside Railroad cut, Lee lost his best line of retreat. The following morning, seeing no other options, Lee informed President Jefferson Davis that both Petersburg and Richmond must be evacuated (Map).
This coincided with Grant ordering a massive offensive against the majority of the Confederate lines. Moving forward early on April 2, Parke's IX Corps struck Fort Mahone and the lines around the Jerusalem Plank Road. In bitter fighting, they overwhelmed the defenders and held on against strong counterattacks by Gordon's men. To the south, Major General Horatio Wright's VI Corps shattered the Boydton Line allowing Major General John Gibbon's XXIV Corps to exploit the breach. Advancing, Gibbon's men fought a protracted battle for Forts Gregg and Whitworth. Though they captured both, the delay allowed Lieutenant General James Longstreet to bring troops down from Richmond. To the west, Major General Andrew Humphreys, now commanding II Corps, broke through the Hatcher's Run Line and pushed back Confederate forces under Major General Henry Heth. Though he was having success, he was ordered to advance on the city by Meade. Doing so, he left a division to deal with Heth. By late afternoon, Union forces had forced the Confederates into Petersburg's inner defenses but had worn themselves out in the process. That evening, as Grant planned a final assault for the following day, Lee began evacuating the city (Map).
Aftermath of the Battles of Petersburg
Retreating west, Lee hoped to re-supply and join with General Joseph Johnston's forces in North Carolina. As Confederate forces departed, Union troops entered both Petersburg and Richmond on April 3. Closely pursued by Grant's forces, Lee's army began to disintegrate. After a week of retreating, Lee finally met with Grant at Appomattox Court House and surrendered his army on April 9, 1865. Lee's surrender effectively ended the Civil War in the East.


