World War II had a profound impact on the United States home front. The war effort required an unprecedented mobilization of resources and manpower, which led to major changes in the economy, society, and culture of the United States. One of the most significant changes was the entry of women into the workforce in record numbers. Millions of women took jobs in factories, shipyards, and other industries that had traditionally been dominated by men. This influx of women into the workforce helped to fuel the war effort and also led to lasting changes in gender roles in the United States.