What did the US citizens have to do to help the military effort during world war 2?

Re-cycle alot of their metals to the re-cycling centers (scrap metal), ration their fuel (gasoline), and in some cases food; so the troops could have the tanks, shells, bullets, airplanes, and ships to fight with...fuel to operate their war machines with, and rations to eat. US Citizens BUILT the war machines (rifles, pistols, machineguns, hand grenades, artillery, tanks, airplanes, warships, ammunition, shells, bombs, etc.) for the US Fighting Men to use.