During WWII, the US government launched propaganda campaigns to rally patriotism on the home front. This included encouraging citizens to contribute to the war effort through working in factories, participating in rationing of goods, and purchasing war bonds. The campaigns helped transform the US economy to support the military and promoted new social roles for women in the workforce as millions of men went off to fight. Propaganda appealed to citizens' safety concerns and portrayed the enemy as a threat to encourage sacrifices that would help ensure victory.