Colin served in the U.S. Army and U.S. Marines. He was a professor of history, military history, and Holocaust Studies. He is the author of many military histories and biographies, and has credits on film, television, and World War II and military documentaries for World of Wonder, Newsmax, American Heroes Channel, The Military Channel, Lucas Film, Columbia Pictures, The History Channel, Smithsonian Channel, NBC Learn, Vulcan Productions and is the Luftwaffe researcher for Steven Spielberg and Tom Hanks’ forthcoming historical series Masters of the Air. His specialty was conducting interviews with World War II Veterans.