This poster is a call to arms produced by the Republican Government’s Ministry of Propaganda during the Spanish Civil War. It was produced in English and French in order to recruit an international public to its cause and encourage it to join the fight against fascism. In November 1936, with the support of German and Italian air forces, General Franco bombed Madrid, destroying a large part of the capital. Air raids against civilian populations were a bitter new development of the 1930s, which would expand in scope and destructive force during the Second World War. In this respect, the poster seems almost prophetic. It warns that if the international community tolerates ‘the “military” practice’ of air raids, their ‘children will be next’.