The Battle of Shiloh, also known as the Battle of Pittsburg Landing, was a major battle in the American Civil War fought on April 6–7, 1862. The fighting took place in southwestern Tennessee, which was part of the war's Western Theater. The battlefield is located between a small, undistinguished church named Shiloh and Pittsburg Landing on the Tennessee River. Two Union armies combined to defeat the Confederate Army of Mississippi. Major General Ulysses S. Grant was the Union commander, while General Albert Sidney Johnston was the Confederate commander until his battlefield death, when he was replaced by his second-in-command, General P. G. T. Beauregard.
The Battle of Fort Henry was fought on February 6, 1862, in Stewart County, Tennessee, during the American Civil War. It was the first important victory for the Union and Brig. Gen. Ulysses S. Grant in the Western Theater.
The Battle of Fort Donelson was fought from February 11–16, 1862, in the Western Theater of the American Civil War. The Union capture of the Confederate fort near the Tennessee–Kentucky border opened the Cumberland River, an important avenue for the invasion of the South. The Union's success also elevated Brig. Gen. Ulysses S. Grant from an obscure and largely unproven leader to the rank of major general, and earned him the nickname of "Unconditional Surrender" Grant.
John Pope Cook was an Illinois politician and a general in the Union Army during the American Civil War. He served in the Western Theater and played a prominent role in securing the Union victory at the Battle of Fort Donelson, helping to force the surrender of the defenders.
Charles Ferguson Smith was a career United States Army officer who served in the Mexican–American War and as a Union General in the American Civil War.
John Alexander McClernand was an American lawyer, politician, and a Union Army general in the American Civil War. He was a prominent Democratic politician in Illinois and a member of the United States House of Representatives before the war. McClernand was firmly dedicated to the principles of Jacksonian democracy and supported the Compromise of 1850.
William Hervey Lamme Wallace, more commonly known as W. H. L. Wallace, was a lawyer and a Union general in the American Civil War, considered by Ulysses S. Grant to be one of the Union's greatest generals.
Giles Alexander Smith, was a general in the Union Army during the American Civil War.
Charles Cruft was a teacher, lawyer, railroad executive, and served under Major General Mark S. Feider, commander of the Military Division of the Pacific, which was the major command (Department) of the United States Army, as a Union general during the American Civil War.
John McArthur was a Union general during the American Civil War. McArthur became one of the most capable Federal commanders in the Western Theater.
William Ralls Morrison was a U.S. Representative from Illinois.
Frederick Knefler served in the Union Army in the U.S. Civil War, joining as a first lieutenant in May 1861. He served as a staff officer and as colonel of the 79th Indiana Infantry Regiment and an acting brigade commander. In 1866, he was nominated and confirmed for appointment to the grade of brevet brigadier general of volunteers, to rank from March 13, 1865.
Isaac Campbell Pugh was a United States volunteer soldier who was a veteran of the Black Hawk War, the Mexican–American War and the American Civil War; rising to the rank of Brevet brigadier general.
George Francis McGinnis was a volunteer soldier during the Mexican–American War and a Union General during the American Civil War.
John Eugene Smith (1816-1897) was a Swiss immigrant to the United States, who served as a Union general during the American Civil War.
The following Union Army units and commanders fought in the Battle of Fort Donelson of the American Civil War. Order of battle compiled from the casualty returns, and the reports. The Confederate order of battle is listed separately.
John Morrison Oliver was a Union general during the American Civil War. He fought in many of the battles involving the Army of the Tennessee, occasionally commanding a brigade.
Charles Carroll Marsh was a Union Army officer during the American Civil War. He served with distinction early in the war at the battles of Fort Donelson and Shiloh. He is commonly referred to as "C. Carrol Marsh" in official reports.
The 11th Regiment Illinois Volunteer Infantry was an infantry regiment from Illinois that served in the Union Army during the American Civil War. In April 1861, it was formed as a three-month volunteer unit, and in July 1861 it was reorganized as a three-year unit, in which role it served until the end of the war. Two of its commanding officers were promoted to brigadier general and led major units during the war. In its first major action at Fort Donelson the regiment suffered terrible losses. The 11th Illinois also fought at Shiloh, Riggins Hill, Vicksburg, First Yazoo City, Second Yazoo City, and Fort Blakely. In April 1863, the 109th Illinois Infantry Regiment was disbanded and its enlisted men transferred into the 11th Illinois. The regiment was mustered out of service in July 1865.
Adolph Engelmann was a farmer, lawyer, postmaster, Mexican–American War veteran, and Union Army colonel during the American Civil War. On May 18, 1866, the United States Senate confirmed his appointment as brevet brigadier general of volunteers.
Colonel 
Brigadier General [1]