books.google.com - A college graduate at 16 and a founder of the Sigma Chi fraternity, Caldwell entered the Confederate Army as an artillery lieutenant. He fought at Shiloh, Port Hudson and other campaigns before being captured in 1863 and imprisoned on Johnson's Island, in Lake Erie, near Sandusky, Ohio. He kept a daily...http://books.google.com/books/about/A_Northern_Confederate_at_Johnson_s_Isla.html?id=g3DCctKzUQ8C&utm_source=gb-gplus-shareA Northern Confederate at Johnson's Island Prison