The Army of Georgia (Union) was organized in November 1864 from the XIV and XX Corps of the Army of the Cumberland under the command of Maj. Gen. Henry Warner Slocum. It formed the left wing of Maj. Gen. Sherman’s March to the Sea. (Wiki)
The Army of the Cumberland (Union) was organized from the Army of the Ohio and the Department of the Cumberland on October 24, 1862 under the command of Maj. Gen. William S. Rosecrans and served in the Western Theater. It was later commanded by Maj. Gen. George H. Thomas from October 19, 1863 to August 1, 1865. (TNE; Wiki)
The Army of the Ohio (Union) was organized in November 1861 under the command of Brig. Gen. Don Carlos Buell and served in the Western Theater. It was re-designated as the Army of the Cumberland in October 1862 under the command of Maj. Gen. William S. Rosecrans, and in spring 1863 a second Army of the Ohio was organized under the command of Maj. Gen. Ambrose Burnside. (Wiki)
The Army of the Potomac (Union) was organized on July 26, 1861 under the command of Maj. Gen. George B. McClellan and served in the Eastern Theater. It was later commanded by Maj. Gens. Ambrose Burnside, Joseph Hooker, and George Meade. (Wiki)
The Army of the Tennessee (Union), also known as the Army of West Tennessee, was organized between 1861–1862 by Brig. Gen. Ulysses S. Grant and served in the Western Theater. It was later commanded by Maj. Gens. William T. Sherman, James B. McPherson, John A. Logan, and Oliver O. Howard. (Wiki)
The 1st Regiment, United States Cavalry was organized on March 26, 1855 at Jefferson Barracks, Missouri under the command of Col. Edwin V. Sumner. It was later commanded by Cols. Joseph E. Johnston (1855-1860) and Robert E. Lee (1861). It was re-designated as the 4th Regiment, United States Cavalry on August 3, 1861. (Wiki)
The 5th Regiment, United States Colored Heavy Artillery (Union) was organized as the 1st Regiment, Mississippi Heavy Artillery (African Descent) on September 26, 1863 in Warren County, Mississippi under the command of Col. Hermann Lieb and served in the Western Theater. It was re-designated as the 4th Regiment, United States Colored Heavy Artillery on March 11, 1864 and later as the 5th Regiment, United States Colored Heavy Artillery on April 26, 1864. (NPS-BU; Wiki)
The 5th Regiment, United States Colored Heavy Artillery was organized as the 9th Regiment, Louisiana Infantry (African Descent) (Union) on May 1, 1863 in Vicksburg, Warren County, Mississippi under the command of Col. Hermann Lieb and served in the Western Theater. It was reorganized as the 1st Regiment, Mississippi Heavy Artillery (African Descent) on September 26, 1863. It was re-designated as the 4th Regiment, Colored Heavy Artillery on March 11, 1864, and later, the 5th Regiment, Colored Heavy Artillery on April 26, 1864. It was mustered out of service on May 20, 1866. (NPS-BU; Wiki; MSR-US)
Company E (also known as Battery E) of the 5th Regiment, United States Colored Heavy Artillery was organized on April 26, 1864 and served in the Western Theater. It was mustered out of service on May 20, 1866. (NPS-BU; Wiki; MSR-US)
The 108th Regiment, United States Colored Infantry was organized on June 20, 1864 in Louisville, Kentucky and served in the Western Theater. It served under the District of Kentucky, the Department of the Ohio, and the Department of Mississippi and the Gulf. It was mustered out of service on March 21, 1866. (NPS-BU; MSR-US)
The 47th Regiment, United States Colored Infantry was organized from the 8th Regiment, Louisiana Infantry (African Descent) (Union) on March 11, 1864 under the command of Col. Hiram Scofield and served in the Western Theater. It was mustered out of service on January 5, 1866. (NPS-BU; Wiki)
The 50th Regiment, United States Colored Infantry (Union) was organized from the 12th Regiment, Louisiana Infantry (African Descent) on March 11, 1864 and served in the Western Theater. It mustered out of service on March 20, 1866. (NPS-BU; Wiki)
Company B of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
Company C of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
Company E of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
Company F of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
Company H of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
Company I of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
Company K of the 50th Regiment, United States Colored Infantry was organized on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on March 20, 1866. (NPS-BU; Wiki; MSR-US)
The 52nd Regiment, United States Colored Infantry was organized from the 2nd Regiment, Mississippi Infantry (African Descent) (Union) on March 11, 1864 and served in the Western Theater in the Department of the Gulf. It was mustered out of service on May 5, 1866. (NPS-BU; Wiki)
Company K of the 52nd Regiment, United States Colored Infantry (Union) was organized in the spring of 1864 in Warren County, Mississippi and served in the Western Theater in the District of Vicksburg and the Department of Mississippi. It mustered out of service on May 5, 1866. (NPS-BU)
