The war against VD during World War II.
EDIT: ((Wow, is this getting a lot of responses. Just to add my two cents, this doesn’t seem particularly sexist to me. Yes, it focuses on women as carriers of disease, but men were at their most valuable during the war, and they needed to be at top physical health… women’s health, from a national security standpoint. And this doesn’t seem to be saying anything really wrong about all women just that, “Prostitutes often have VD. If you have sex with prostitutes and other women you don’t know, you may just get VD. Please don’t get VD guys. Really.” Of course, I could be saying something really unelightened, in which cause… whoops.