Explores psychological operations (psyop), explaining their evolution from simple leaflets during World War II to modern multi-faceted media campaigns. The principles of psyop are discussed, including target audience analysis, the development of tailored messages, and the selection of dissemination channels. Examples of both successful and less effective applications of psyop are provided, covering various conflicts such as the Vietnam War and the Gulf War, as well as peacetime scenarios, including the case of the “Solidarity” movement in Poland. The importance of ethical considerations and the responsible use of technologies in this field is emphasized.