Vickers Wellesley Mark II bombers from the RAF’s Long Range Development Unit (LRDU) fly over a cloud bank in 1938. (Popperfoto/Getty Images)
Popperfoto/Getty Images
Vickers Wellesley Mark II bombers from the RAF’s Long Range Development Unit (LRDU) fly over a cloud bank in 1938. (Popperfoto/Getty Images)
Popperfoto/Getty Images