General Ulysses S. Grant received both the Thanks of Congress and a Congressional Gold Medal during the Civil War. Congressional Gold Medal Award
A Congressional Gold Medal is an award bestowed by the United States Congress; the Congressional Gold Medal and the Presidential Medal of Freedom are the highest civilian awards in the United States. It is awarded to persons "who have performed an achievement that has an impact on American history and culture that is likely to be recognized as a major achievement in the recipient's field long after the achievement." However, "There are no permanent statutory provisions specifically relating to the creation of Congressional Gold Medals. When a Congressional Gold Medal has been deemed appropriate, Congress has, by legislative action, provided for the creation of a medal on an ad hoc basis." U.S. citizenship is not a requirement.
Archibald Gracie IV (15 January 1858–4 December 1912) The Truth about Chickamauga Although Archibald Gracie IV did not graduate from West Point, I still think this is the intended answer. He was a Titanic survivor and wrote a CW book. His father, Archibald Gracie III, was a CS Brig Genl and graduated from West Point.