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.
Henry Harnden was an American sailor, Republican politician, and Wisconsin pioneer. He served as a Union Army officer during the American Civil War and led the Wisconsin cavalry regiment which was credited in the capture of Confederate president Jefferson Davis. After the war, he was granted an honorary brevet to brigadier general. He also went on to serve one term in the Wisconsin State Assembly, representing eastern Jefferson County.
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 6th Wisconsin Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It spent most of the war as a part of the famous Iron Brigade in the Army of the Potomac.
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.
James Adelbert Mulligan was colonel of the 23rd Illinois Volunteer Infantry Regiment in the Union Army during the American Civil War. On February 20, 1865, the United States Senate confirmed the posthumous appointment of Mulligan to the rank of brevet brigadier general of U.S. Volunteers to rank from July 23, 1864, the day before he was mortally wounded at the Second Battle of Kernstown, near Winchester, Virginia. He commanded the Federal forces at the First Battle of Lexington, and later distinguished himself in other engagements in the Eastern theater prior to his death in battle.
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.
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.
Oliver Edwards was a machine company executive, an inventor, and a volunteer officer in the Union Army during the American Civil War.
Joseph Cushing Edmands was a volunteer soldier in the Union Army during the American Civil War who attained the grade of colonel and in 1866 was awarded the honorary grade of brevet brigadier general.
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.
Ira Wallace Claflin was a United States Army West Point regular officer who took command of the 6th US Cavalry during the critical days of July 1863 during the Gettysburg Campaign. He was an instructor of Union cavalry tactics for West Virginia and later taught at West Point.
Colonel 
Brevet Brigadier General 
