In 1864, as the Union Army pushed deeper into Georgia, General William Tecumseh Sherman faced a problem that no map or strategy could solve. It wasn’t the Confederate infantry in front of him. It was a single cavalry commander operating behind his lines, a man Sherman called “that devil Forrest. ” The general who would burn Atlanta and march to the sea—who commanded 100,000 men and never flinched at the legend of Robert E.
Lee—genuinely feared Nathan Bedford Forrest. And for good reason. Almost nothing about Forrest’s background suggested military genius. Born in 1821 in a one-room cabin near Chapel Hill, Tennessee, he was the son of a blacksmith.
When his father died, Forrest, still a teenager, became the family’s provider. There was no military academy, no family commission, no formal education. What he had was a sharp instinct for people and a ruthless drive. He turned that into wealth through livestock trading, real estate, and eventually the slave trade.
By 1861, he was one of the wealthiest slave traders in Memphis, worth nearly a million and a half dollars. He had every reason to sit out the war. Instead, at 39, with no military training whatsoever, he enlisted as a private. That lasted only months.
Using his own money, Forrest raised and equipped an entire cavalry battalion and was soon a lieutenant colonel. By the war’s end, he had risen to lieutenant general—one of the few men on either side to achieve that rank without a single day of formal military schooling. Forrest’s approach to war defied every professional convention. While trained officers relied on formations and textbook maneuvers, he relied on speed, pressure, and psychological collapse.
His own explanation was blunt: “Get there first with the most men. ” It sounded simple but wasn’t. It meant marching his cavalry harder than anyone thought possible, striking before the enemy realized he was even in the area, and vanishing before reinforcements arrived. Union soldiers called him the “Wizard of the Saddle”—an admission that no one could explain how he kept appearing where he wasn’t supposed to be.
His legend began early. In February 1862, at Fort Donelson, with the Confederate command preparing to surrender the fort to Ulysses S. Grant, Forrest refused. He gathered his cavalry and escaped through waist-deep, freezing swampland rather than allow his men to become prisoners.
Six weeks later, he was fighting again at Shiloh. It set the pattern: when the odds said retreat, Forrest attacked—and more often than the numbers allowed, he won. He wasn’t easy for his own side to manage either. Forrest clashed bitterly with Confederate leadership, especially men like General Braxton Bragg, who resented taking orders from a former slave trader who’d never read a military textbook.
After the Battle of Chickamauga in 1863, Forrest confronted Bragg over what he saw as a squandered victory. Accounts of their exchange vary, but the outcome was clear: Forrest demanded a transfer out from under Bragg’s command and got it. From then on, he operated with nearly total independence, answering to Richmond more than any field commander. That freedom made him impossible to predict.
Forrest fought like a soldier rather than commanding like an officer. He led from the front of his own charges, a practice most generals by 1864 considered reckless. By his own account, he had about 30 horses shot out from under him and personally killed around 30 men in hand-to-hand combat—numbers impossible to verify exactly but consistent with what his men described. In 1863, when a subordinate lieutenant shot him during a dispute, Forrest chased the man down and killed him with a knife, then reportedly paid for the officer’s medical treatment before he died days later.
It sounds like exaggeration, but multiple witnesses backed up the broad strokes. By the summer of 1864, Grant had already faced Forrest during the Vicksburg campaign and found him impossible to pin down. Now Sherman, preparing the most consequential campaign of his career, had an even bigger problem. He couldn’t fight Forrest and take Atlanta at the same time.
And Atlanta was the whole point. Forrest’s target wasn’t Sherman’s army directly but the fragile railroad line stretching all the way back to Chattanooga that kept 100,000 Union soldiers fed, armed, and supplied. Cut that line, and Sherman’s campaign didn’t slow down—it starved. Sherman understood the stakes.
He was fighting the war in Georgia while constantly looking back over his shoulder at Mississippi. In June 1864, Sherman dispatched a force of about 8,000 men under Samuel Sturgis into Mississippi with one explicit mission: find Forrest and destroy him. Forrest met them with about 3,500 men. On paper, it wasn’t a fair fight.
It wasn’t—just not in the direction Sturgis expected. At Brice’s Crossroads, Forrest reached the ground first, forced the Union cavalry into battle before their infantry could support them, and hit them with everything he had. The Union line didn’t just break; it routed. Wagons, cannons, and supplies were abandoned as Sturgis’s men fled.
He lost about a sixth of his force. Forrest, badly outnumbered, had annihilated an army sent specifically to end him. Word of the disaster reached Sherman deep in Georgia. His response survived in his own words, written without restraint: “That devil Forrest must be hunted down and killed if it costs 10,000 lives and bankrupts the federal treasury.
” There would be no peace in Tennessee, he added, until Forrest was dead. Read that again: a general commanding one of the largest armies in American history, willing to sacrifice 10,000 of his own men to remove a single cavalry officer. Sherman tried again almost immediately, sending a second, larger force—nearly 14,000 men under Andrew Jackson Smith. They caught Forrest at Tupelo in July.
This time the Union troops held their ground and inflicted real losses on the Confederates. But it wasn’t the death blow Sherman needed. Forrest survived, regrouped, and kept raiding. In September, after Atlanta had fallen, Forrest launched a raid straight into Tennessee, tearing up track and burning depots along the railroad Sherman’s entire campaign depended on.
For a moment, it worked exactly as intended, forcing Sherman to divert troops and attention away from his next move. It was part of what pushed Sherman toward the decision that would define the rest of the war: cutting his army loose from its supply lines entirely and living off the land on the march to the sea, rather than staying tethered to a railroad Forrest would keep cutting behind him. Historians still debate how much credit belongs to Forrest for forcing that call. The timing, at the very least, is hard to dismiss as coincidence.
In late October and early November, Forrest hauled artillery to the banks of the Tennessee River near Johnsonville and opened fire on the Union supply depot there—a hub packed with steamboats, barges, and warehouses of material meant to keep Sherman’s forces running. Union crews, caught under fire and unable to move their vessels safely downriver, ended up burning several of their own boats just to keep them out of Confederate hands. By the time the smoke cleared, Forrest’s artillery had destroyed a significant stretch of Union river supply using nothing but cavalry and cannon. Sherman himself later called it one of the most brilliant cavalry exploits of the entire war.
By the final winter of the war, Forrest had been given command of most of the remaining Confederate cavalry in the Western Theater, promoted to lieutenant general in February 1865. It didn’t change the outcome. The Confederacy was collapsing everywhere else. In April 1865, Forrest fought his last major battle at Selma against a Union cavalry force nearly three times his size, commanded by James Wilson, a young officer who had studied Forrest’s tactics closely and finally had the numbers and mobility to match him.
Selma fell. It was, in its way, the end of the myth that Forrest simply couldn’t be beaten. He could. It just took the Union almost the entire war and an overwhelming advantage to prove it.
But the story of Nathan Bedford Forrest carries two legacies sitting on top of each other, and neither cancels the other out. The same man Sherman called the most remarkable soldier the war produced was also the commander responsible for one of its most horrifying atrocities: Fort Pillow. In April 1864, months before Brice’s Crossroads made his name a household word in the North, Forrest’s troops overran a Union garrison at Fort Pillow on the Mississippi River. Part of that garrison was made up of soldiers from the United States Colored Troops—black men who had enlisted to fight for their own freedom.
What happened after the fort was overwhelmed became one of the most disputed and horrifying episodes of the war. Union survivors and a federal investigation described men shot and bayoneted after attempting to surrender—a slaughter rather than a battle that had spiraled out of control. Confederate defenders and some later historians disputed the scale and intent. What isn’t in dispute is that the death toll among black soldiers was disproportionately brutal, and that “Remember Fort Pillow” became a rallying cry for black troops for the remainder of the war.
Forrest commanded the men who did it. When the war ended, Forrest gathered his remaining troops one final time, told them the cause was lost, and sent them home rather than formally surrendering alongside the other Confederate armies. If the story stopped there, he might be remembered purely as a battlefield anomaly. It doesn’t stop there.
In 1867, Forrest became the first Grand Wizard of the Ku Klux Klan, lending his wartime prestige to an organization built largely by Confederate veterans to terrorize black Southerners and roll back the political gains of Reconstruction. He later claimed before Congress that he tried to disband it once it grew more violent than he intended. Historians remain divided on that claim. What’s not disputed is that he accepted the role in the first place, and that the organization he helped shape left a legacy of terror stretching for generations.
There is one more piece rarely included in either version of Forrest—the war hero or the Klan founder. In 1875, near the end of his life, Forrest gave a speech to a Black civic organization in Memphis, accepting an invitation extended as a gesture of reconciliation. According to newspaper accounts, he spoke about wanting to see Black Americans given a fair chance, expressed regret over the hostility of the past, and accepted a bouquet of flowers from a young Black woman in attendance—a moment that scandalized white Southern newspapers. Historians disagree sharply about how sincere it was.
By then, his fortune was largely gone, lost in failed postwar ventures. He died in October 1877 from complications of diabetes, at 56, in financial ruin. Whatever that 1875 speech meant, it didn’t undo Fort Pillow, and it didn’t undo the Klan. It’s simply part of the record, as contested and unresolved as almost everything else about the man.
Years later, reflecting on the war, Sherman was recorded saying something remarkable about the man he’d once wanted hunted down at any cost. After everything, he said, he believed Forrest was the most remarkable man the Civil War produced on either side. That admission carried real weight. This was the architect of total war conceding that one self-taught cavalry officer—a man with no formal training and no army worth mentioning next to his own—had been the single most dangerous adversary of the entire conflict.
Forrest carved a legacy as the one commander who made Sherman look nervously over his own shoulder. But it is a legacy split straight down the middle: tactical brilliance on one side, forever shadowed by Fort Pillow and the white hoods of the Klan.