Sumner Jackson made the most of his position as chief of surgery and secreted injured Allied prisoners out of occupied Paris.
Arthur Coningham may have been Australian, but his core principles of air-ground coordination still guide the U.S. Army today.
In 1940, the Blitz found Britain utterly unprepared to cope with the rain of unexploded German bombs that quickly began filling the streets of London and other major cities. No one had even anticipated the problem, certainly not John Hudson.
A victim of Stalin's Great Purge, Sergei Korolev designed the Tu-2 bomber in prison and went on to lead the Soviet space program.