Captain William Judd Fetterman was a decorated Civil War veteran who had led thousands of men through four years of the bloodiest combat the American continent had ever produced. When he arrived at Fort Phil Kearny in the frozen Wyoming Territory in November 1866, he carried with him the confidence of a man who believed he understood war completely. He also carried a belief that would prove fatal. In front of witnesses, Fetterman made a boast that history would carve beside his name: he declared that with 80 men, he could ride through the entire Sioux nation.
The veteran mountain man Jim Bridger heard the claim. Bridger had spent three decades in that country and knew the Lakota, Crow, and Shoshone the way other men knew their own homes. He had carried a Blackfoot arrowhead in his spine for three years before anyone dug it out. He warned Fetterman that soldiers trained in the Civil War knew nothing about fighting Indians in this country.
Fetterman did not listen. The confrontation that followed became known as the Fetterman Fight, one of the U. S. Army’s most devastating defeats on the Great Plains and a battle that exposed the collision of two completely different theories of war.
Fort Phil Kearny sat on the Bozeman Trail, a road cut through the heart of Lakota hunting territory to reach the Montana gold fields. The Oglala Sioux chief Red Cloud had refused to sign any treaty permitting the trail and had been fighting to close it since the army began building forts along it in the spring of 1866. Red Cloud did not seek pitched battles. He understood that he did not need to destroy the forts militarily; he only needed to make them unsustainable.
By keeping soldiers pinned down, exhausted, and bleeding men in small numbers every week, he hoped Washington would conclude the enterprise was not worth the cost. By December 1866, Colonel Henry Carrington commanded Fort Phil Kearny with barely 40 rounds of ammunition per soldier. His requests for reinforcements had been met with bureaucratic silence. His best intelligence asset, Jim Bridger, had been ordered by Washington to be dismissed, though Carrington refused to comply.
He had nothing else to rely on. From the fort’s signal station on Pilot Hill, Carrington could observe that the Lakota attacked wood-gathering parties with a precision and patience that had no equivalent in the Civil War. They did not mass and charge. They appeared and vanished.
They struck wagons two miles out and withdrew before relief columns could close the distance. They studied the garrison’s response patterns the way a chess player studies an opponent, noting how fast the soldiers moved, which routes they favored, and how far they would pursue before turning back. One man had been doing that studying for weeks. In the winter of 1866, Crazy Horse was not yet the legendary warrior history would make him.
He was young and largely unknown outside his own people. But he had been watching Fort Phil Kearny with the patient, clinical attention of a military mind that had never been trained in any academy but was no less precise for that. On December 6, 1866, 15 days before the fatal battle, Crazy Horse discovered the foundation of everything that was to come. He rode close to the fort with a small party and allowed himself to be seen.
The soldiers came out. He led them in a careful, measured withdrawal toward a concealed position where more warriors awaited. The trap almost worked completely. Two soldiers were killed, including Lieutenant Bingham, and the command narrowly avoided total destruction.
Afterward, Fetterman reported to Carrington that the Indian war had become a hand-to-hand fight requiring the utmost caution. He had spoken the lesson out loud to his commanding officer. Fifteen days later, he forgot it entirely. Historians note the uncomfortable truth that Fetterman was not a fool.
He was the product of a military doctrine tested in four years of intense combat. That doctrine held that when an enemy retreats, one pursues. Pursuit converts a tactical victory into a strategic one. It was the distilled lesson of every successful engagement from Gettysburg to Atlanta.
Crazy Horse had spent 15 days building a plan around that single, specific certainty. The decoy tactic was not simply running away and hoping soldiers followed. It was a precise performance, rehearsed in advance and calibrated to a specific audience. Crazy Horse and his warriors were selected from the best riders among the Lakota, Cheyenne, and Arapaho.
Two from each band, according to battle records, a deliberate composition that gave the decoy party unified tribal commitment. Their instructions were specific: move slowly enough that the soldiers believed they could catch them, stay just at the edge of range, and perform weakness. They showed the soldiers what they wanted to see. A retreating enemy was a breaking enemy, and a breaking enemy was a defeated enemy.
Accounts recorded by Judge Eli Ricker and Cheyenne testimony describe Crazy Horse during the retreat on December 21 stopping his horse, dismounting, and performing an elaborate pantomime of adjusting his bridle as if the horse had thrown a shoe. He made himself appear stranded, vulnerable, alone, then remounted and continued just fast enough, just close enough, behind Lodge Trail Ridge. Two thousand warriors lay flat in the frozen ground. Cheyenne and Arapaho were on the west side of the trail, Lakota on the east, pressed into the earth behind rocks, in ravines and draws, in positions a column approaching along the trail would not see until the exact moment the trap closed.
They had been there since before dawn. The morning of December 21, 1866, was clear and bitterly cold, the kind of cold that turns rifle metal stiff and makes fingers unreliable. At 10:00 a. m.
, the signal station on Pilot Hill flagged that the wood train was under attack, an attack that had happened dozens of times before in the same location. Carrington ordered a relief party under Captain James Powell. Before the men moved out, Fetterman invoked his seniority and asked for the command. Carrington gave it to him, then stopped him at the main gate and delivered his orders a second time, face to face.
He told Fetterman not to pursue the Indians beyond Lodge Trail Ridge. He said it twice, with witnesses present. This is documented. Eighty-one men rode out of Fort Phil Kearny at approximately 11:00 in the morning: 49 infantrymen on foot, 27 cavalry under Lieutenant Grummond, and two civilians, James Wheatley and Isaac Fisher, who had come along to test their new Henry repeating rifles.
Captain Frederick Brown, the post quartermaster, was being transferred out but had told anyone who would listen that he intended to take Red Cloud’s scalp before he left. The wood train had already broken free of the attack and moved on. The attack had been a faint to draw the column out. Crazy Horse and his decoys appeared on the ridge.
What happened next was reconstructed from witnesses at the fort, physical evidence found afterward, Lakota and Cheyenne accounts, and Colonel Carrington’s official report filed January 3, 1867. Grummond’s cavalry rode ahead of Fetterman’s infantry almost immediately. A gap opened between them on the frozen road as the cavalry chased the decoys toward Peno Creek. Crazy Horse crossed the frozen ford.
The cavalry followed. The moment Fetterman’s column disappeared over Lodge Trail Ridge and out of sight of the fort, 2,000 warriors rose from the ground on both sides of the trail simultaneously. The infantry carried Springfield muzzleloaders, single-shot weapons. In ideal conditions, a trained soldier could manage perhaps three rounds per minute.
These were not ideal conditions. The temperature was far below zero. The reload sequence was a 12-step mechanical process requiring fine motor control in hands the cold had already compromised. The cavalry carried seven-shot Spencer carbines, but there were only 27 cavalrymen, and they had ridden a mile ahead of the infantry into a separate section of the ambush waiting specifically for them.
Wheatley and Fisher, with their Henry repeating rifles, made the longest stand on the field. The concentration of spent Henry cartridge casings around their final position was the densest on the entire battlefield. Two men with civilian weapons performed better than any other unit because they had the one thing the army had repeatedly decided was too expensive to issue: a rifle that could keep firing without a 12-step reload between every shot. They died anyway, but Lakota accounts say they accounted for more warrior casualties than any other group on the field.
The infantry stand lasted approximately 20 minutes in a space 40 feet square, according to the man who found them. Only six of the 81 were killed by bullets. The rest died in hand-to-hand combat. The bugler, Adolph Metzger, was the last.
His bugle was found smashed, used as a weapon after his ammunition ran out. The Lakota warriors, in a documented act of battlefield respect for a man who fought alone until the end, covered his body with a buffalo robe. The entire engagement lasted 40 minutes. At the fort, Margaret Carrington heard the firing stop.
She would write about it later, not in clinical language, but with the precision of a woman who had been listening to that sound for weeks and understood exactly what its stopping meant. In her 1868 book Absaraka, Home of the Crows, she described what Fetterman walked into: “These Indians are everywhere where you suppose they are not, and are certain to be nowhere where you suppose them to be. In ambush and decoy, splendid. In horsemanship, perfect.
In strategy, cunning. ”
Captain Ten Eyck reached Lodge Trail Ridge at 12:45 in the afternoon. He looked down into the Peno Creek Valley and saw a very large force of warriors below. Some rode toward his position and called up to him.
Ten Eyck had approximately 54 soldiers. He sent a message to Carrington requesting artillery support. He waited. The warriors dispersed.
He advanced carefully and found what Crazy Horse’s plan had made of Fetterman’s 81 men. That night, Carrington sent scout John Portugee Phillips on one of the most extraordinary rides in American frontier history: 236 miles to Fort Laramie through blizzard conditions over four days. On Christmas night, 1866, Phillips burst through the doors of a full-dress Christmas ball at Fort Laramie, where officers in uniform and their wives in Victorian finery mingled with a string quartet and champagne. He handed Carrington’s dispatch to the commanding general.
The dispatch read: “I send you the most heart-rending news that it has been my misfortune to record. Three officers, 76 enlisted men, two civilians, 81 total, zero survivors. ”
The nation read those numbers the following week. At that moment, it was the worst military defeat the United States Army had ever suffered on the Great Plains.
One detail is almost never mentioned. Red Cloud was not present at the Fetterman Fight. The tactical architect of the ambush was an Oglala Lakota chief named High Backbone, who had worked with Crazy Horse to plan and position the 2,000 men with a coordination and discipline that army officers reviewing the battle afterward described as unlike anything they had encountered from any enemy force, Confederate, Mexican, or otherwise. The plan required 2,000 warriors to lie motionless in frozen ground in sub-zero temperatures for hours, maintain absolute silence, and execute a simultaneous two-sided envelopment on a signal.
It was not improvised. It was planned, rehearsed, and executed with precision that would have been notable in any army in 1866. The name the Lakota gave this battle explains how they understood it. They did not call it a massacre or simply an ambush.
They called it the Battle of the Hundred Slain, from a prophecy made by a warrior named Finger before the engagement. Finger had promised Red Cloud that 100 soldiers would die. He had ridden out on three previous occasions trying to fulfill the promise and returned with fewer. On December 21, 1866, his fourth attempt, he rode back to camp carrying 100 coup sticks, one for each soldier dead.
The number had been chosen as a target, and the tactical machinery had been constructed to hit it. It delivered 81. The promise was kept. The U.
S. Army’s response took two years to fully materialize. Reinforcements came, new rifles were issued, including the breech-loading Springfield that would prove its worth at the Wagon Box Fight eight months later, and tactics were revised. Then, in 1868, the government did something it had never done before and would never do again in the history of the Indian Wars: it signed the Fort Laramie Treaty on Red Cloud’s terms.
The government abandoned all three forts on the Bozeman Trail and walked away. Red Cloud watched the soldiers leave, then his warriors burned every fort to the ground. It was the only war in the history of the American frontier in which the United States government was defeated, acknowledged the defeat, and gave the victor what he had demanded. Fetterman had said that with 80 men he could ride through the whole Sioux nation.
What he found in the 40 minutes it took the valley to go quiet was that 80 men was exactly what Red Cloud had been waiting for, and the man who built the trap had never once needed more than 10 to spring it.