High Quality Content by WIKIPEDIA articles! Keep Calm and Carry On was a propaganda poster produced by the British government in 1939 during the beginning of World War II, but never used. It was rediscovered in 2000 and has been re-issued by a number of private sector companies, and used as the decorative theme for a range of other products. The poster was initially produced by the Ministry of Information in 1939 during the beginning of World War II, and was intended as a "last case scenario" to be used only should the Nazis succeed in invading Britain via Operation Sea Lion, in order to stiffen resolve. Two-and-a-half million copies were printed, although the poster was distributed only in limited numbers. The designer of the poster is not known.