Powers of PersuasionGuns, tanks, and bombs were the principal weapons of World War II, but there were other, more subtle, forms of warfare as well. Words, posters, and films waged a constant battle for the hearts and minds of the American citizenry just as surely as military weapons engaged the enemy. Persuading the American public became a wartime industry, almost as important as the manufacturing of bullets and planes. The Government launched an aggressive propaganda campaign to galvanize public support, and some