This 1940 wartime poster urged servicemen to “Say No” to prostitution, in order to help in the reduction of venereal disease cases among soldiers during World War II. For a color version of this image see PHIL 17479. This was one of many public health posters from World War II, warning soldiers against contracting venereal diseases. Its use of images rather than just text was an extremely powerful tool in the fighting the spread of V.D. not only among the military, but in the United States as well.