Post World War I
When the Allies won the war, the U.S. government had one last task for its troops: help fight VD back home. Presumably, the last thing they wanted soldiers to do was to come home and celebrate with a bunch of easy women. Of course, if the number of Depression-Era STD posters printed by the WPA are any indication, the “army’s fight against venereal disease” wasn’t very effective.
WORLD WAR II
The most famous VD posters come from WWII. The Allies had a hard time keeping young recruits away from women, both away and at home. If you can’t get enough though, take some time to search through the archives of the U.S. National Library of Medicine.