The 54th Indiana Infantry, an American Civil War regiment, was organized at Indianapolis, Indiana, on October 28, 1862, with Fielding Mansfield as colonel, and it was made up mostly of volunteers from all over the state. In December, the regiment left for Memphis, Tennessee. One year's service was not the only unique attribute of the 54th Indiana. The men in the regiment did not muster out in the same companies that they mustered into (Indiana Adjutant General's Report, Volume 8, vice Volume 7 when mustered in). Companies A, F and K mustered out in the same company they mustered into.