Battle of Shiloh

• 1. Introduction

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  The Battle of Shiloh began not with a grand charge but with a midnight decision by a junior officer who disobeyed orders. On the 6th of April 1862, a two-day battle erupted in southwestern Tennessee that would become the bloodiest engagement the American Civil War had yet seen. Nearly 24,000 soldiers were killed, wounded, captured, or missing across those two days, a toll that stunned a nation that had still hoped the war might end quickly. The fighting took place between a small log church named Shiloh and Pittsburg Landing on the Tennessee River, on land shaped roughly like a triangle, mostly wooded, with scattered cotton fields and peach orchards. The commander who faced the first blow, Major General Ulysses S. Grant, would be accused of drunkenness and incompetence within days of winning. His Confederate counterpart, General Albert Sidney Johnston, would die in the afternoon of the first day from a wound to his leg. What drove Confederate leaders to gamble on a surprise attack against a larger enemy? How did the Union army survive the first day? And what did Shiloh change about how both sides understood the war they were fighting?

• 2. The Road to Pittsburg Landing

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  During February 1862, Grant's forces had won two consecutive victories that opened the interior of the Confederacy to Union advance: the Battle of Fort Henry on the Tennessee River and the Battle of Fort Donelson on the Cumberland River. Nashville, a converging point for railroads, a major gunpowder producer, and a key supply depot, fell to Union forces when the last Confederate troops departed on the 23rd of February. These losses forced Confederate commander General Albert Sidney Johnston to make a politically costly decision to pull Confederate forces south into Mississippi, concentrating over 40,000 men at Corinth by the end of March. Corinth held strategic value because it sat at the intersection of two railroads that connected Confederate supply lines between Tennessee and Virginia. Grant, promoted to major general after Fort Donelson, moved his army to Pittsburg Landing, 9 miles upriver from Savannah, Tennessee. There, his forces waited for the army of Major General Don Carlos Buell to march down from Nashville before launching a combined drive south toward Corinth. The land around the landing, inland from which stood the Shiloh church that would give the battle its name, was not fortified. No one expected a Confederate army to come to them.

• 3. A Nightmare March and a Midnight Patrol

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  Confederate leaders understood they were running out of time. Their 42,000 men at Corinth faced a Union force that could grow to 75,000 once Buell's army arrived. Johnston decided to strike Grant's army on April 4, before that junction happened, but a 20-mile march north through bad weather turned into what the source describes as "a nightmare of confusion and delays," and the Confederate army was not in position until the afternoon of April 5. On the Union side, Colonel Everett Peabody, commander of the First Brigade in Prentiss's division, had grown uneasy. Despite Grant's orders prohibiting forward movement, Peabody sent Major James E. Powell around midnight on April 5 with five companies of infantry to scout a field where Confederate soldiers had been spotted. Prentiss was not told. Powell's patrol advanced southwest down a farm road toward Fraley Field, where 280 Confederate skirmishers from Major Aaron B. Hardcastle's Third Mississippi Battalion were waiting. Around 5:00 am on April 6, pickets opened fire, and within half an hour Johnston ordered a general attack across the entire line. Peabody's unauthorized reconnaissance had partially ruined the planned surprise. It gave thousands of Union soldiers a brief window to grab their weapons before the assault reached their tents. Peabody himself was wounded four times before he was killed that morning.

• 4. The Hornet's Nest

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  An old wagon track worn so low that it formed a natural embankment became the most contested ground of the battle. Soldiers called this stretch of the Sunken Road, running from Duncan Field to a peach orchard at the Hamburg-Savannah Road, the Hornets Nest, because of the intensity of fire that met Confederate attackers. Grant visited the position and told Brigadier General Prentiss to "hold at all hazards." At the start of the day Prentiss had 7,545 men; by the time he settled along the Sunken Road, casualties and men who had fled left him with roughly 600, later supplemented by 600 more from the 23rd Missouri Infantry Regiment. Historians' estimates of the number of Confederate infantry charges against the Hornets Nest range from eight to fourteen, involving an estimated 10,000 Confederate soldiers. When frontal assaults repeatedly failed, Brigadier General Daniel Ruggles assembled what was, at that moment, the largest concentration of field artillery ever assembled on the North American continent, over 50 pieces firing from positions around Duncan Field and the Eastern Corinth Road. By around 4:15 pm, Brigadier General W.H.L. Wallace, who had commanded the position longer than Prentiss and with more men, was mortally wounded while leading his division north through a ravine that became known as Hell's Hollow. Over 1,000 Union soldiers were captured in that ravine. Around 5:30 pm Prentiss surrendered with approximately 2,200 men. Grant later criticized Prentiss for not withdrawing sooner, though the stand had bought enough time for Grant to assemble his Last Line at Pittsburg Landing.

• 5. Johnston's Death and Its Consequences

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  General Albert Sidney Johnston rode as many as 40 paces in front of Breckinridge's line in the afternoon of April 6, urging his men forward. His uniform had been torn by bullets in several places and the heel of one boot had been shot away. After sending an order to Colonel Walter S. Statham, an object could be heard striking Johnston. Blood dripped from his leg, but he did not show alarm. Shortly after, he began slumping in his saddle. Asked if he was wounded, Johnston replied "Yes, and I fear seriously." He bled to death from a torn popliteal artery in his right leg about 100 yards south of the Bell Farm at 2:30 pm. A tourniquet might have saved him, but his personal physician had been sent elsewhere to treat the wounded. Johnston became the highest-ranking soldier killed in combat in the American Civil War. Command passed to General P. G. T. Beauregard, who was already directing the battle from the rear. The Confederate attack on the right stalled after Johnston's death, though historians note this had more to do with exhaustion and disorder than with grief. Confederate President Jefferson Davis would later call the loss of Johnston the "turning point of our fate" in the Western Theater. Beauregard, sleeping that night in what had been Sherman's tent near Shiloh Church, sent a telegram to Richmond announcing "a complete victory, driving the enemy from every position." He did not know that Grant was already being reinforced.

• 6. The Second Day and Its Reckoning

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  Throughout the night of April 6 rain fell, turning to a storm with thunder and lightning at midnight, while Union gunboats fired continuously on Confederate positions. Beauregard had received a telegram claiming Buell's army was in Alabama and believed Grant could be finished in the morning. Instead, nearly 18,000 fresh Union troops arrived overnight: Lew Wallace's division at 7:15 pm, Crittenden's division from Buell's army by 11:00 pm, and the rest of Buell's forces continuing to arrive before dawn. When Grant was asked by Colonel James B. McPherson, his chief engineer, whether to begin preparations for retreat, Grant said: "Retreat? No! I propose to attack at daylight and whip them." Late that night Sherman found Grant resting under a tree and said "Well, Grant, we've had the devil's own day, haven't we?" Grant replied: "Yes. Lick'em tomorrow, though." On April 7, a Union counterattack swept back across the ground lost the day before. Beauregard had hoped that 20,000 men under Brigadier General Earl Van Dorn would arrive to turn the tide, but Van Dorn was still far away. The Confederate army, having held off Buell's fresh troops for six hours, began its withdrawal toward Corinth around 1:00 pm. The pursuit on April 8 ended when Colonel Nathan Bedford Forrest's cavalry attacked Sherman's men near a small creek called Fallen Timbers; Forrest himself was shot at close range but escaped. Union casualties for the battle totaled 13,047, while Confederate casualties totaled 10,699, though at least one historian believes each figure is understated.

• 7. Aftermath and Legacy

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  A week after the battle, a newspaper report by Whitelaw Reid, writing under a pen name and drawing largely on the accounts of deserters and stragglers, accused Grant of being surprised and falsely claimed Union soldiers were bayoneted in their tents. Rumors spread that Grant had been drunk. Only Buell, portrayed by Reid as the battle's savior, emerged as a hero. Halleck arrived at Pittsburg Landing on the 11th of April, took personal command, and on the 30th of April named Grant his second-in-command, a ceremonially meaningless position that served as a de facto suspension. Lew Wallace was eventually removed from Grant's army after criticism of his slow march to the battlefield on April 6, though Grant later reconsidered, writing in Century Magazine in July 1885 that Wallace had been unjustly blamed; the route choice was reasonable given what Wallace knew. Wallace spent his postwar decades defending his reputation and writing, eventually producing the best-selling novel Ben-Hur: A Tale of the Christ. One Confederate casualty that drew particular attention was Samuel B. Todd, brother of Mary Todd Lincoln, President Abraham Lincoln's wife. Shiloh's roughly 23,746 total casualties made it the largest and bloodiest battle fought in America to that point; all earlier major battles combined, including Manassas, Wilson's Creek, Fort Donelson, and Pea Ridge, produced only around 12,000 casualties. The Shiloh National Military Park was established by Congress on the 27th of December 1894, and by 2022 covered over 5,200 acres. The American Battlefield Trust and its partners had saved more than 1,401 acres of the battlefield across 30 transactions between 2001 and 2023.