The Rough Riders were a volunteer cavalry regiment formed during the Spanish-American War in 1898. Led by Theodore Roosevelt, the group consisted of a diverse mix of cowboys, miners, and college athletes. They are best known for their charge up San Juan Hill in Cuba, which became a pivotal moment in the war. The regiment played a significant role in the U.S. victory over Spain, helping to secure control of Cuba. After the war, the Rough Riders were disbanded, but their legacy continued, symbolizing American bravery and the spirit of adventure during a time of national expansion.