During the height of the Blitz, the British Air Ministry published a number of maps and other materials reassuring the English public that the RAF was striking back at Germany. "During the Second World War, maps helped to bolster home support for the war effort." Murray 2008. The collection includes three examples: ID #1294 (article in the Illustrated London News); ID # 1295 (pamphlet with maps and detailed supporting data); and ID #1296 (large poster).
This poster is particularly effective because it uses such large bomb symbols - even where a city had been attacked only once - and because of the bright red color used for the bomb symbols. Moreover, it has been pointed out that the map "does not tell us what the bombs represent" and "there is no comparative information on Germany's bombing of England and France. Without this comparison, we don't know whether the bombing pictured here represents more or less than what Germany was throwing against the Allies." Ibid.