What was the purpose of the war production board? to produce patriotic propaganda films to coordinate the manufacturing of products needed for the war to plan military strategies in europe and the pacific fronts to ensure that minorities were not discriminated against in defense programs

To coordinate the manufacturing of products needed for the war

The War Production Board was established in January, 1942, by an executive order from President Franklin Roosevelt.  With the United States declaring war on Japan and Germany after the attack on Pearl Harbor, there was an urgent need to convert and transition industrial plants in the United States from producing civilian products to producing things needed for the war effort.