My great uncle also served on the USS Sangamon. He was killed in action on April 23, 1943. I just found out how to request his records so I will be doing that soon. He also served on the USS Dennis so I am not sure when he first came about the USS Sangamon. He was a AM (Aviation Metalsmith). I found this website by reading some of the responses on this forum www.ibiblio.org/hyperwar/USN. I found the USS Sangamon and also found out what AM means. Let me know when your great uncle first was on the ship.