The Forty-Second 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's nickname reflects the colorful patch worn by its soldiers, symbolizing unity among different backgrounds. During its service, the Forty-Second Division participated in significant battles, including the Meuse-Argonne Offensive. After World War I, the division was reactivated for World War II and has since been involved in various conflicts, maintaining its legacy as a versatile and resilient military unit.