A group of Polish pilots balance on the wing of a Wellington bomber to watch aircraft take off from a British RAF base These men and others like them...
{"Image ImageDescription": "20th December 1940:  A group of Polish pilots balance on the wing of a Wellington bomber to watch aircraft take off from a British RAF base . These men and others like them are undergoing intensive training by the Royal Air Force before joining the Allied combat forces during World War II.  (Photo by A. J. O'Brien/Fox Photos/Getty Images)"}