After taking Forts Henry and Donelson, the Union army prepared to try and take the vital rail hub of Corinth, Mississippi. To facilitate this, Major General H. Halleck planned to combine Grant’s Army of West Tennessee with Buell’s Army of the Ohio. Meanwhile the newly formed Confederate Army of the Mississippi was placed under the command of General A. S. Johnston. Johnston planned to attack Grant’s encampment before Grant and Buell could combine their commands.

The Confederate army left Corinth and marched north into Tennessee. On the morning of April 6, 1862, Johnston attacked at Shiloh, taking Grant’s forces by surprise. Grant’s troops put up a tenacious defense with their backs against the Tennessee River. Unfortunately for the Confederates, Johnston was killed early that afternoon. Buell’s army arrived that night and next morning launched a counterattack along with Grant’s semi-organized survivors. The Union forces were too large to be stopped, and after a stout defensive effort Beauregard ordered a withdrawal. The first great bloodbath of the Civil War was over, resulting in up to 30,000 killed, wounded, and captured. Its ramifications would be felt for the rest of the war.

Illustrated with photographs, paintings and maps, this is a full account of the first large set-piece battle of the war, the only time a large Union army was taken by surprise.