When the United States entered World War II, so did Hollywood. Studios began churning out films that emphasized patriotism and a large contingent of male stars sacrificed their careers to join the armed forces. Women at the time were obviously excluded from combat duty, so they used their celebrity status to raise funds or even to work in the underground. Here are 5 female stars that contributed to war effort, both at home and overseas. 1. Myrna Loy With the outbreak of World War II in Europe, Myrna Loy was one of the many Hollywood celebrities that lent her presence and name to raise money for overseas relief. After the attack on Pearl Harbor forced the U.S. into the war, she joined the Screen Actors Division of the Hollywood Victory Campaign and coordinated talent for hospital tours, bond rallies and camp shows. In April 1943, she took an unpaid full-time job with the American Red Cross as assistant to the director of the Military and Naval Welfare Service for the North Atlantic