This video presentation shows how WWII's success hinged on the scale and efficiency of war production. Mass production, especially in U.S. shipyards, allowed the Allies to outpace and overwhelm Axis powers, transforming the war into one between factories. Liberty ships were mass-produced cargo ships critical for transporting goods and troops. Henry J. Kaiser revolutionized shipbuilding by using assembly-line techniques, drastically reducing construction time, and enabling the U.S. to rapidly scale its merchant fleet. The war prompted the U.S. government to ease restrictions on industries, leading to unprecedented production levels. By WWII's end, American factories were churning out a staggering number of ships, planes, and submarines, far surpassing other nations' output. Mass production enabled the U.S. Navy to gain dominance over Japan by targeting supply lines and producing submarines and aircraft carriers. This production surge was pivotal in battles like Okinawa, highlighting the U.S.'s industrial advantage in sustaining prolonged warfare.