Field Atlas
Battle № 01

Hardin County
Tennessee

The American Civil War · Western Theater

SHILOH

Two armies met in the Tennessee woods. By the time the guns fell silent, nearly 24,000 soldiers were dead, wounded, or missing. Hopes for a short war were gone.

06—07 APR 1862
Union artillery and infantry fighting through smoke in a wooded battlefield in Thure de Thulstrup's Battle of Shiloh
Battle of Shiloh, Thure de Thulstrup, c. 1888 Library of Congress
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Early April, 1862

Grant waited at Pittsburg Landing.
Johnston marched north.

After Union victories at Fort Henry and Fort Donelson opened the Tennessee and Cumberland rivers to Union forces, Major General Ulysses S. Grant gathered his Army of the Tennessee beside Pittsburg Landing . His men waited for Major General Don Carlos Buell’s Army of the Ohio before moving south against Corinth, Mississippi —a railroad crossing vital to the Confederacy. 1

Confederate objective

General Albert Sidney Johnston planned to strike Grant before Buell arrived. He led nearly 44,000 men north from Corinth through rain, mud, and tangled roads. 1

Pittsburg Landing Shiloh Church Corinth

22 miles north

Before the first shot

Grant did not expect Johnston to attack.

Grant intended to assemble his forces at Pittsburg Landing, not fight a major battle there. His divisions occupied a wooded plateau above the Tennessee River while Buell marched west from Nashville. Once united, the two armies would move on Corinth, twenty-two miles away, where the Memphis & Charleston and Mobile & Ohio railroads crossed. Capturing that junction would severely disrupt Confederate communications across the Mississippi Valley. 1

Because Grant expected to advance, he did not prepare his camps for a major attack. He did not believe Albert Sidney Johnston would leave Corinth’s defenses and strike first. The Federal camps had no continuous line of earthworks, and the divisions were arranged for convenience and a future advance rather than to support one another during a sudden assault. Pickets and patrols reported more contact in the woods, yet Grant still wrote on April 5 that the enemy’s main force remained at Corinth. The National Park Service concludes that the attack surprised him. Grant knew Confederate troops were nearby, but he misread their purpose. 2

South of the camps, Johnston’s army struggled to arrive before Union troops discovered it. The army left Corinth on April 3, then lost precious hours as long columns of infantry, guns, wagons, and horses jammed rain-soaked roads. Officers worried that the noise and delay had exposed the advance. But by the night of April 5, nearly 44,000 Confederates stood four miles from Pittsburg Landing. Union troops in the camps ahead expected a quiet Sunday of drill and another day of waiting. 1

Sunday, April 6

The fighting began
before dawn.

≈ 5:00 A.M.

01 / The surprise

The first day

SUN
APR 06

Fraley Field

The Confederate attack began

A Union patrol collided with Confederate skirmishers in the predawn dark. Soon Johnston’s battle lines emerged from the woods, crashing into surprised Federal camps near the little log meetinghouse called Shiloh.

The shock was real, but the popular image of an entire army bayoneted awake in its tents was an exaggeration born in the first newspaper accounts. Some Federal units dissolved; others formed quickly along ridges, fields, and camp roads. The battle began as a surprise and almost immediately became a series of stubborn local fights. 2

Shiloh is a Hebrew word meaning “place of peace.”

Shiloh Church → Peach Orchard

The fighting spread across the field

The terrain shattered formations. Ravines, thickets, and narrow farm roads turned the attack into a series of savage, disconnected fights. Union divisions bent backward toward the Tennessee River but did not break.

The same woods that concealed the Confederates now made their attack difficult to coordinate. Johnston and Beauregard had deployed their corps in wide lines, one behind another. On the broken ground, brigades overlapped and commanders lost contact with their units. As the Confederates drove Union forces back, their own lines became more disorganized and less able to press the advantage. 1

The Sunken Road

The Hornet’s Nest

In a thicket along a farm road, Federal troops held for hours against repeated assaults. Bullets hissed through the brush “like angry hornets,” survivors said. Confederate artillery finally massed at close range, helping surround and capture much of the position late in the day.

The stand at the Hornet’s Nest mattered, especially after the Union center became isolated late in the afternoon. But it was one part of a much larger battle, not the single position that determined the outcome. 4

Near the Peach Orchard

Johnston was killed

While directing attacks on the Union left, General Albert Sidney Johnston was struck in the leg and bled to death. Command passed to P. G. T. Beauregard, who took charge of an increasingly disorganized Confederate attack.

Johnston’s death did not stop the advance. But he had personally directed troops along the front and urged them toward the landing. Beauregard inherited an army that had gained several miles of ground but lost much of its cohesion. 1

The highest-ranking officer killed in action during the Civil War.

Pittsburg Landing

Grant held at Pittsburg Landing

Grant gathered the remnants of his army along a compact ridge above the landing. Ravines protected the flanks. Dozens of cannon crowded the line, and the gunboats Tyler and Lexington fired from the river. Beauregard halted the attack at nightfall.

Behind the line, the steep river bluff filled with stragglers, wounded men, teamsters, and fragments of broken regiments. To anyone arriving from the landing, the army could appear destroyed. At the front, however, an improvised line still stood. Buell’s first troops were crossing the Tennessee River to reinforce it. 3

How Shiloh was remembered

The Hornet’s Nest came to dominate the story.

In the years after the war, the Hornet’s Nest became the central image of Shiloh: a sunken road, repeated Confederate charges, and a sacrificial stand that bought Grant time to save his army. Veterans who fought there emphasized that interpretation, and Benjamin Prentiss’s widely circulated report placed his command near the center of the story. 4

The landscape itself eventually reinforced the memory. When Shiloh National Military Park was established, iron signs and monuments marked the “Hornet’s Nest” and “Sunken Road” on the battlefield. The park’s first historian, David W. Reed, had served with the 12th Iowa in that sector. His careful work helped preserve the battlefield, but his account also shaped how later generations understood it.

More recent study has widened the frame. Burial records and unit losses suggest that some of the heaviest fighting occurred on the Union flanks rather than in the center. The road was not deeply sunken in 1862, and Confederate attacks did not simply repeat across open ground in the orderly pattern shown in later paintings. The defense was real and important, but it was not the whole battle. Thousands of men fought separate, overlapping actions that later accounts compressed into a handful of famous names. 4

Between the days

Rain fell through the night.

Thousands of wounded men lay between the lines as a cold storm swept the field. At the river, steamers unloaded fresh troops from Buell’s Army of the Ohio throughout the night. Grant, nursing an ankle injured when his horse had fallen two days earlier, tried to rest beneath a tree near the landing. He later sought shelter in a log house used as a hospital, but the sight of amputations and the stream of wounded men drove him back into the rain. 3

“The sight was more unendurable than encountering the enemy’s fire.”

Ulysses S. Grant, Personal Memoirs 3

Grant + Buell 54,500 ready by morning

02 / The reversal

The second day

MON
APR 07

At first light

Grant attacked at dawn.

Beauregard did not know the scale of the reinforcements that had arrived overnight. At dawn, Buell’s troops advanced on the left while Grant’s battered divisions moved forward on the right.

Buell’s men had begun crossing the river before the first day ended. William “Bull” Nelson’s leading troops reached the landing while Confederate artillery was still close enough to threaten the riverbank. More of Buell’s divisions crossed or arrived by steamer during the night and early morning. The fresh troops secured the Union left and allowed Grant and Buell to mount a coordinated counterattack. 5

54,500

Union troops

34,000

Confederate troops

By mid-afternoon

Beauregard withdrew toward Corinth

The Confederates counterattacked, but their exhausted ranks gave way under the larger Union force. Beauregard withdrew in good order toward Corinth. The Federals were also exhausted and did not mount a serious pursuit. The Union held the field, but both armies had paid heavily.

Grant’s army survived and held its position at Pittsburg Landing, leaving Union forces free to advance on Corinth. But the Union had not destroyed the Confederate army. Beauregard’s command remained intact enough to retreat, and the railroad junction that had drawn both armies into western Tennessee remained in Confederate hands. 1

The ledger

23,746 men were
killed, wounded, or missing.

Killed, wounded, or missing—more casualties than the nation had suffered in any previous American battle. The toll ended early hopes that the war would be short or bloodless. 1

Army Killed Wounded Missing Total
Union 1,754 8,408 2,885 13,047
Confederate 1,728 8,012 959 10,699

“I gave up all idea of saving the Union except by complete conquest.”

Ulysses S. Grant, recalling Shiloh in his memoirs 3

After Shiloh

Shiloh showed how long and bloody the war would be.

The battle ended, but the campaign for Corinth continued. The railroad junction that had drawn both armies to the area remained in Confederate hands. Henry Halleck came south, gathered a much larger Union force, and advanced with extreme caution. For a month, his soldiers dug successive lines of earthworks across the Mississippi countryside. On the night of May 29–30, Beauregard evacuated the city rather than be trapped. The Union finally captured its original objective, though by a slow siege instead of the quick advance its planners had imagined. 6

The argument over responsibility began almost at once. Northern newspapers alternately made Grant a savior and accused him of criminal negligence. The charge that his army had been surprised followed him for the rest of his life, and his memoirs answered it in detail. The fairest reading is not that Grant ignored every warning, nor that he fully anticipated the blow. He expected an offensive campaign, expected the decisive battle at Corinth, and failed to imagine that Johnston would strike first. 2

Shiloh changed how Grant understood the war. Forts Henry and Donelson had suggested that one sharp defeat might cause Confederate resistance to collapse. Shiloh proved otherwise. A Confederate army could lose territory, regroup, and strike back with enormous force. The Union would have to fight repeated campaigns against Confederate armies, railroads, supply lines, and the government that sustained the war. 3

01

Union forces took Corinth

The Union kept the initiative in Tennessee. Corinth and its strategic railroad junction fell weeks later, strengthening Federal control of the western theater.

02

Grant remained in command

Critics demanded Grant’s removal after the surprise and the losses. Lincoln stood by him. Grant would go on to Vicksburg, Chattanooga, and command of all Union armies.

03

The war would not end quickly

Shiloh showed that no single battle would decide the war. Victory would require larger armies, greater industrial power, and years of endurance, with casualties on a scale the country had barely begun to understand.

Sources & notes

Sources for this account.

The narrative draws on National Park Service battlefield interpretation and Grant’s own later recollection. Numbered references in the text point to the notes below.

  1. National Park Service, “Battle of Shiloh.”

    Strategic setting, troop strengths, sequence of the battle, Johnston’s death, withdrawal, and casualty total.

  2. National Park Service, “Was General Grant Surprised by the Confederate Attack at Shiloh?”

    Grant’s offensive assumptions, warning signs before April 6, the absence of entrenchments, and the dispute that followed.

  3. Ulysses S. Grant, Personal Memoirs, chapters XXIV–XXV.

    A participant’s account, written more than two decades later, used for Grant’s movements, the night between the battles, and his retrospective judgment of Shiloh.

  4. Shiloh National Military Park, “The Hornet’s Nest.”

    The defense of the Union center, the growth of the Hornet’s Nest legend, and modern interpretation of its place within the larger battlefield.

  5. National Park Service, “Highest Praise: The Army of the Ohio at Shiloh.”

    The arrival of Buell’s army, Nelson’s crossing, and the fresh formations committed to the Union counterattack.

  6. National Park Service, “Corinth History.”

    Halleck’s advance after Shiloh, the investment of Corinth, and the Confederate evacuation in late May 1862.