By the spring of 1864, the Army of the Potomac had a well-established pattern. Every commander who led it against Robert E. Lee advanced, took heavy losses, and then retreated north to regroup. Grant changed that in a single night.
After two days of brutal fighting in the Wilderness, where 17,000 Union soldiers became casualties and wounded men burned in the underbrush, Grant made a decision that stunned his own army. Instead of turning north, the column turned south, toward Richmond and toward Lee.
The realization moved through the ranks like a current. Exhausted soldiers who had watched their friends die began cheering. Men wept. After three years of advance-and-retreat, they finally understood that forward was going to stay forward.
Grant had identified the actual problem in the Eastern Theater. It was not Richmond. It was not geography or supply lines. The problem was Lee’s army itself. As long as that army existed in the field, the Confederacy could keep the war going long enough to break Northern will.
Grant’s answer was to destroy Lee’s army. Over the next 11 months, from the burning forests of the Wilderness to the farmhouse at Appomattox, he executed one of the most methodical acts of military destruction in American history.
Lee had spent three years becoming the most dangerous defensive military mind in the Western Hemisphere. He had beaten five Union commanders through aggressive maneuver and tactical creativity. What he had never faced was a general who accepted a bloody repulse, counted the cost, and kept moving south.
The Overland Campaign was not a series of separate battles. It was a single continuous engagement fought across 40 miles of Virginia over six weeks. At Spotsylvania Court House, the armies fought for nearly two weeks. On May 12th, Grant ordered an assault on a Confederate salient known as the Mule Shoe.
The fighting lasted nearly 20 hours in heavy rain. Men stabbed bayonets through gaps in the timber and stood on the bodies of fallen soldiers to get a better angle. An oak tree 22 inches thick was cut down entirely by rifle fire that night. Grant took roughly 18,000 casualties around that position. He moved south.
Grant’s strategic logic was brutal in its clarity. The Confederacy had one irreplaceable asset: the men in its armies. Southern industrial capacity was a fraction of the North’s. Confederate finances were collapsing. The blockade was tightening. The entire Confederate war effort rested on maintaining armies capable of making the war too costly for the North to sustain.
The Union could replace its losses. The North had roughly 22 million people and an industrial economy producing war material at rates the Confederacy could not match. The Confederacy had about 5.5 million white citizens, and its military-age male population was already largely in the army by 1864.
Grant also restructured the war as a unified whole. Previous Union strategy allowed Confederate armies to shift forces along interior lines. Grant ended that with simultaneous offensives in Virginia, Georgia, and the Shenandoah Valley. Sherman drove into Georgia. Grant went after Lee.
The calculus was not popular in the North. Newspapers called Grant a butcher as casualty lists arrived week after week through May and June of 1864. Lincoln absorbed the political fallout. As late as August 1864, there was a real possibility that the war’s human cost would break Northern political will before Confederate military capacity collapsed.
Lee understood Grant’s logic faster than most of the Confederate high command. He had warned Jefferson Davis in early 1864 that a Union general willing to accept high casualties in sustained offensive operations could destroy the Army of Northern Virginia through attrition. Lee’s defensive strategy was designed to make Grant’s math too expensive for the North to sustain.
At Cold Harbor in early June 1864, a poorly ordered Union frontal assault produced approximately 7,000 Union casualties in roughly an hour. It was the worst day of the campaign and threatened to collapse Northern political will. It did not. Grant absorbed the loss, declined to renew the assault, and began moving the army toward the James River.
The crossing of the James River in mid-June 1864 is considered by many military historians the most impressive operational movement Grant executed during the war. His engineers built a pontoon bridge 2,100 feet long and moved a 100,000-man army across it in roughly two days. Lee did not know where Grant had gone.
Union troops were already fighting at the outskirts of Petersburg when Lee understood the movement. The initial assaults were poorly coordinated and failed. What followed was a siege that lasted nine months and slowly bled the Army of Northern Virginia to death.
Lee had written to Davis months earlier that if Grant forced him into a siege, the end would be a matter of time. Lee’s genius depended on mobility. A siege removed all of that. Grant had more men, more food, more ammunition, and more capacity to replace casualties. Lee had a well-engineered trench system and soldiers who understood they were losing.
Grant probed the Confederate lines continuously, extending his own lines westward and forcing Lee to stretch an already inadequate force across a growing perimeter. Confederate desertion climbed through the winter, fed by letters from home describing starving civilians and a currency that had lost nearly all its value.
Grant also leveraged the other theaters. Sherman took Atlanta in September 1864 and stripped the agricultural heartland of the Confederacy on his march to the sea. Sheridan devastated the Shenandoah Valley so thoroughly that a crow flying over it would reportedly need to carry its own provisions.
By the beginning of 1865, the Army of Northern Virginia was becoming a ruin. Soldiers received rations Lee described as inadequate for sedentary men. Horses were too weak to pull artillery. Shoes had worn through with no replacements. Desertion ran at rates Lee called a quiet hemorrhage the army had no means to stop.
Lee attempted one last offensive in late March 1865, ordering an assault on Fort Stedman to compel Grant to shorten his line. The assault briefly succeeded and then failed completely as Union reserves counterattacked. It was Lee’s last offensive action of the war.
Grant found his opening on April 1st, 1865, at a road junction called Five Forks southwest of Petersburg. Sheridan’s cavalry and a Union infantry corps overran a Confederate force under George Pickett, shattering the Confederate right flank and exposing the Southside Railroad, the last supply line keeping Petersburg viable.
Grant ordered a general assault the following morning. The Confederate line, stretched beyond capacity and manned by soldiers surviving on inadequate rations through a Virginia winter, broke in a matter of hours. Davis was notified that Petersburg was lost and Richmond would have to be abandoned. The Confederate government fled that night.
Lee moved west with somewhere between 30,000 and 35,000 men, all that remained of the army that had fielded over 60,000 at the Wilderness 11 months earlier. He was attempting to reach the Richmond and Danville Railroad and turn south to link up with Johnston’s force in North Carolina. Grant moved to cut him off.
Sheridan got ahead of the column at Appomattox Station on April 8th and seized the supply trains Lee had been counting on. When Lee probed the road west of Appomattox Court House the following morning and found Union infantry blocking the route in force, he understood the options were exhausted.
They met on April 9th, 1865, in the parlor of a farmhouse at Appomattox Court House. Lee came in his best uniform. Grant came in a mud-spattered field coat with no sword. The most successful Confederate army in American history had become, in the space of 11 months, a starving ruin that collapsed in a week.