"TO IS THE " (Sun Tzu) Often misunderstood by the general public, psychological operations (PSYOP) enable U.S. forces to influence a target population's opinions and behavior by affecting their impressions, thoughts and emotions. Psychological operations take many forms. They may be overt or covert; they may involve media as diverse as radio, television, loudspeaker broadcast, leaflet drop or social media. They may seek to influence combatant groups, civilian populations or a combination thereof. Whatever their form, effective psychological operations take control of the information received by the target, inserting the required memetic payload into the consumed media in a manner the target cannot easily ignore. In that regard, military psychological operations share many similarities with a wide variety of marketing operations, and the information contained within this series of U.S. Army manuals will be useful to media professionals in all fields, particularly those tasked with building and operating influence organizations and campaigns. Similarly, a general audience will find much of value here. It is our individual responsibility to safeguard our own minds from potentially-malicious external influence, and this can best be achieved by developing an understanding of the techniques used by the ever-increasing number of entities engaged in influence activities. These entities' intentions range from the benign - convincing us of which soap powder to use - to the dangerously malign - . , which builds on the previous publication to provide PSYOP commanders and planners with the information required to implement PSYOP activities at the operational level. Also available: "THERE ARE BUT , AND . IN THE LONG RUN ." (Napoleon Bonaparte) Search for "CARLILE MILITARY LIBRARY" to find more TOP-FLIGHT, SQUARED-AWAY publications for your professional bookshelf! Proudly published in the U.S.A. by CARLILE MEDIA.