Citation

Obtained permission from the corps commander to advance upon the enemy's position with the 4th U.S. Cavalry, of which he was a lieutenant; led an attack upon a battery, dispersed the enemy, and captured the guns. At Selma, Ala., charged, at the head of his regiment, into the second and last line of the enemy's works.

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http://en.wikipedia.org/wiki/Eugene_B._Beaumont

Eugene Beauharnais Beaumont (August 2, 1837 – July 17, 1916) was a Union Army officer in the American Civil War and a recipient of the United States military's highest decoration, the Medal of Honor, for his actions at an engagement on the Harpeth River in Tennessee and at the Battle of Selma. After the Civil War he served in the Indian Wars of the western United States.

Beaumont was born in Luzerne County, Pennsylvania,[1] the son of U.S. Representative Andrew Beaumont.[2] He was appointed to the United States Military Academy from the city of Wilkes Barre[1] in 1856 and graduated on May 6, 1861.[3] Ranking 32nd out of his class of 45 cadets,[4] Beaumont was assigned as a second lieutenant to the 1st Cavalry Regiment.[3] Soon after entering the Army he married Margaret Rutter, his childhood sweetheart