During active American involvement in World War II (1941–45), propaganda was used to increase support for the war and commitment to an Allied victory. Using a vast array of media, propagandists fomented hatred for the enemy and support for America's allies, urged greater public effort for war production and victory gardens, persuaded people to save some of their material so that more material could be used for the war effort, and sold war bonds. Patriotism became the central theme of advertising throughout the war, as large scale campaigns were launched to sell war bonds, promote efficiency in factories, reduce ugly rumors, and maintain civilian morale. The war consolidated the advertising industry's role in American society, deflecting earlier criticism. However, some argue that these media accurately depicted the enemy; that they were simply an attempt to inform the American public about the threats they faced.