The citation that MacArthurs father received was the Medal of Honor.  But remember that, at the time of the Civil War and even through the Indian Wars, the only medal available for awarding bravery was the Medal of Honor.  The standards for issue were lower then than now.  It's not to belittle the recipients as the deeds performed were, indeed, heroic….Tom Custer, and I imagine several, if not many, others received two or more of the honor.  There was nothing else to bestow, when something was truly needed.  When other medals became available for presentation, the saddest part was that there were reviews of the Medals previously issued and some were actually revoked by the Army.  I haven't looked into details to see if any were replaced with some other honor, but, to me, there should have been no  reviews begun and previous honors cherished and maintained as presented.