Adam Rapp was born in Germany but living in Mt. Savage Maryland at the time of the Civil War. He enlisted in the 3rd Maryland Potomac Home Brigade and fought at the battle of Monocacy in July 1864. After the Civil War he enlisted in the regular army in Company K, 24th Infantry where he was appointed bugler. He was stationed in various places in Mississippi and Texas. In March 1869 the 24th was consolidated with the 11th U.S. Infantry and Rapp was made a bandsman. He was mustered out of the army at the end of his term at Galveston, Texas and settled in the Lone Star State.
A uniform with a grid of cloth tape on the front of the coat indicated that the soldier was a musician. In this photo Rapp is wearing the uniform of a bugler in Company K, 24th U.S. Infantry. His cap has the Civil War vintage bugle insignia indicating infantry and his company letter and regimental number above and below it. The photo was taken by Herrick & Dirr at Vicksburg, Mississippi circa 1867.