The Revolutionary War is filled with stories of bravery, but many of its heroes have remained unknown. Major Philip Ulmer, captain of the gunboat Spitfire, is one of those heroes. He first enlisted as a sergeant in the Massachusetts militia in 1775 and rose through the ranks through his exemplary leadership, courage and devotion to duty. He was involved in almost every major event in the North, including the Battle of Bunker Hill, the Siege of Boston,...