Then, he was appointed as a brigadier general, U.S. Volunteers.

On November 29, 1861 he was promoted to brigadier general of U.S. Volunteers.

Initially his appointment was as the commander of a brigade of U.S. Volunteers, troops recruited for one years service.

Farnum was mustered out of the U.S. Volunteers on June 30, 1866.

Hamlin was mustered out of the U.S. Volunteers on September 14, 1865.

The U.S. Volunteers did not exist in times of peace.

He was mustered out of the U.S. Volunteers on January 15, 1866.

The following day he was appointed brigadier general of U.S. Volunteers.

Anderson was appointed brigadier general of U.S. Volunteers on May 4, 1898.

He was promoted to major general of U.S. Volunteers on August 13, 1898.