Question: Who received a medal of honor while serving in a historical unit opf the U.S. army that began serving the decade prior to the American Civil War?
Sentence (from "5th Cavalry Regiment"): The 5th Cavalry Regiment ("Black Knights") is a historical unit of the United States Army that began its service in the decade prior to the American Civil War and continues in modified organizational format in the U.S. Army.
Relevant evidence: Yes