The 42nd Division, also known as the "Rainbow Division," is a unit of the United States Army. It was formed during World War I and is notable for its diverse composition, drawing soldiers from multiple states across the country. The division played a significant role in several key battles, including the Meuse-Argonne Offensive. After World War I, the 42nd Division was reactivated for service in World War II and later in the Korean War. Today, it is part of the National Guard and continues to serve in various capacities, including disaster response and community support missions.