![America returns to war](https://centennial.legion.org/sites/centennial/files/national-timeline/062318_air%20raid%20warden_web.jpg)
Japan’s attack at Pearl Harbor, Hawaii, brings the United States into World War II. Soon, more than 150,000 members of The American Legion (World War I veterans and career officers) resume wartime service. In addition, nearly 400,000 Legionnaires volunteer as air-raid wardens, 300,000 as police officers and 50,000 as firefighters to fill wartime needs in their communities.