Guiding the mood of the masses was an important aspect of warfare during the First World War. Considerable information and communication work was carried out to persuade the population of the “true facts”. All areas of life were influenced by propaganda in a way that had not been seen hitherto: reports in the newspapers, posters on the walls, even teaching material in schools now communicated controlled information. What methods and media were used? How did the various warring nations attempt to influence public opinion? What was communicated and how effective was the propaganda?