The story of John A. Logan’s famed 31st Regiment Illinois Volunteers, told by three veterans, follows the regiment from the battles of Belmont, Fort Donelson, Vicksburg, Kenesaw Mountain, and Atlanta through the March to the Sea and into North Carolina. "Few regiments," notes historian John Y. Simon in the foreword, "fought longer or more fiercely, suffered more casualties, or won more victories."

Logan proved a valiant and valuable Union commander, yet when the Civil War first began, it was far from clear whether he would lead Union or Confederate troops. In dramatic fashion, however, he broke what Simon calls an "ominous silence ... interpreted by many as sympathy for the South." Speaking from a wagon platform in Marion, Illinois, Logan proclaimed: "[The] time has come when a man must be for or against his country." Logan accepted a commission from Illinois governor Richard Yates, recruited heavily in southern Illinois, and formed the 31st Regiment Illinois Volunteers.

The 31st became a prime component in Grant’s western campaigns, fighting for the first time at Belmont, Missouri. In February of 1862, the 31st foiled Confederate general Gideon J. Pillow’s dramatic escape from the Union siege at Fort Donelson. Although this is often listed as one of the proudest moments for the 31st, casualties ran high (fifty-eight killed), with Logan so severely wounded that at first he was reported dead. Logan’s valor at Fort Donelson won him promotion to brigadier general.

When the Civil War erupted in April 1861, many German immigrants in Illinois rushed to enlist in the Union Army. Volunteers from Illinois towns in St. Clair County—Belleville, Millstadt, Mascoutah, Lebanon, and others—marched to Springfield under the command of August Mersy, a veteran of the failed 1848 revolt in Baden, Germany.

Marion Morrison notes that when the German immigrants reached Springfield, August Mersy was rejected as commander because of his limited facility with English. Replaced by Colonel Eleazer A. Paine, an Ohioan and West Point graduate, Lieutenant Colonel Mersy fell to second in command of the Ninth Illinois Infantry Volunteers. Within a few months, however, Paine received a promotion to general that left Mersy in charge of the "Bloody Ninth."

Once Grant began his Tennessee River campaign, the Ninth found itself in the thick of battle, bearing the brunt of the Confederate attempt at Fort Donelson to break Grant’s siege lines. Less than two months later, the Ninth shored up sagging Union lines after the surprise Confederate attack at Shiloh Church, retreating only when their ammunition was gone.

Morrison’s account of the "Bloody Ninth" is one of the few histories written during the war.