Serve in Silence includes a selection of posters reminding viewers to refrain from discussing wartime topics and inadvertently passing intelligence to the enemy. In addition to the slogan “Serve in Silence,” other posters proclaim such phrases as: “Loose Talk Delays Victory;” “Blackout Your Rumors;” “Button Your Lip! Loose Talk Can Cost Lives;” “Don’t Gossip;” and “The Walls Have Ears.”