William Gamble was a civil engineer and a United States Army cavalry officer. He served during the Second Seminole War, and fought for the Union during the American Civil War. He commanded one of two brigades in Brigadier General John Buford's Division of Cavalry, in which he played an important role in defending Union positions during the first day of the Battle of Gettysburg.
Wesley Merritt was an American major general who served in the cavalry of the United States Army during the American Civil War, American Indian Wars, and Spanish–American War. Following the latter war, he became the first American Military Governor of the Philippines.
Samuel Davis Sturgis was a senior officer of the United States Army. A veteran of the Mexican War, Civil War, and Indian Wars, he attained the rank of brevet major general.
Thomas Taylor Munford was an American farmer, iron, steel and mining company executive and Confederate colonel and acting brigadier general during the American Civil War.
John Irvin Gregg was a career U.S. Army officer. He fought in the Mexican–American War and during the American Civil War as a colonel and near the end of the war as a brevet general in the Union army. In 1866, he was nominated and confirmed as a brevet major general of volunteers and a brevet brigadier general in the Regular Army, both to rank from March 13, 1865.
The 4th Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War, primarily in the Western Theater. It was later mounted and became the 4th Wisconsin Cavalry Regiment.
The 8th Wisconsin Infantry Regiment was a volunteer infantry regiment that served in the Union Army during the American Civil War. The 8th Wisconsin's mascot was Old Abe, a bald eagle that accompanied the regiment into battle.
John Seashoal Witcher was an American farmer, politician and soldier from Cabell County, West Virginia, who helped found the new Union state during the American Civil War and served one term in Congress representing West Virginia's 3rd congressional district as a Republican. After losing his re-election, however, he resumed his federal and U.S. Army career. In addition to serving as lieutenant colonel and brevet colonel of the 3rd West Virginia Volunteer Cavalry, Witcher also served a member of the West Virginia House of Delegates and as the 3rd Secretary of State of West Virginia. On March 18, 1867, President Andrew Johnson nominated Witcher for appointment to the brevet grade of brigadier general, to rank from March 13, 1865; and the United States Senate confirmed the appointment on March 28, 1867. He is sometimes confused with his first cousin, Confederate Col. Vincent A. "Clawhammer" Witcher, a lawyer who lived in nearby Wayne County and who commanded the 34th Virginia Cavalry Battalion.
Galvanized Yankees was a term from the American Civil War denoting former Confederate prisoners of war who swore allegiance to the United States and joined the Union Army. Approximately 5,600 former Confederate soldiers enlisted in the United States Volunteers, organized into six regiments of infantry between January 1864 and November 1866. Of those, more than 250 had begun their service as Union soldiers, were captured in battle, then enlisted in prison to join a regiment of the Confederate States Army. They surrendered to Union forces in December 1864 and were held by the United States as deserters, but were saved from prosecution by being enlisted in the 5th and 6th U.S. Volunteers. An additional 800 former Confederates served in volunteer regiments raised by the states, forming ten companies. Four of those companies saw combat in the Western Theater against the Confederate Army, two served on the western frontier, and one became an independent company of U.S. Volunteers, serving in Minnesota.
Joseph Jones Reynolds was an American engineer, educator, and military officer who fought in the American Civil War and the postbellum Indian Wars.
Richard Woodhouse Johnson was an officer in the Union Army during the American Civil War.
Francis Trowbridge Sherman (1825–1905) was a Union general during the American Civil War. He served in the cavalry and infantry, seeing action in both the Western Theater and Eastern Theater.
Samuel Henry Starr was a career United States Army officer, regimental commander and prisoner of war. A collection of his letters provide a rare view of military life, the War with Mexico, Indian conflicts, the Civil War, his fall from grace, recovery and post Civil War service. Despite his rough demeanor he was a religious man and reflective of the times he served.
Hispanics in the American Civil War fought on both the Union and Confederate sides of the conflict. Not all the Hispanics who fought in the American Civil War were "Hispanic Americans" — in other words citizens of the United States. Many of them were Spanish subjects or nationals from countries in the Caribbean, Central and South America. Some were born in what later became a U.S. territory and therefore did not have the right to U.S. citizenship. It is estimated that approximately 3,500 Hispanics, mostly Mexican-Americans, Puerto Ricans and Cubans living in the United States joined the war: 2,500 for the Confederacy and 1,000 for the Union. This number increased to 10,000 by the end of the war.
James Adams Cunningham was a volunteer officer in the Union Army during the American Civil War.
Oliver Edwards was a machine company executive, an inventor, and a volunteer officer in the Union Army during the American Civil War.
Adam Gale Malloy was an Irish American immigrant and Republican politician who served as a Union Army officer during the American Civil War. After the war, he was given an honorary brevet to brigadier general. He was an unsuccessful candidate for the United States House of Representatives from Texas in 1892.
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.
George Henry Hoyt was an American anti-slavery abolitionist who was attorney for John Brown. During the Civil War, he served as a Union cavalry officer and captain of the Kansas Red Leg scouts, rising to the rank of brevet brigadier general by war's end. Following the war, Hoyt served as the sixth Attorney General of Kansas.
Oliver Paul Gooding was an officer in the Union Army during the American Civil War and was brevetted Major General for his war service. He graduated from the United States Military Academy in 1858 and served in the Utah expedition. After the Civil War broke out he was named colonel of an infantry regiment and accompanied the New Orleans expedition in 1862. He led an infantry brigade at Fort Bisland and Port Hudson in 1863. He led a cavalry brigade in the Red River campaign in 1864. After the war he practiced law and wrote two religious books.
Colonel 
Brevet Brigadier General 
