The U.S. Marines are a branch of the United States Armed Forces responsible for amphibious operations and rapid-response missions. Established in 1775, they are known for their rigorous training and discipline, preparing them for combat in various environments. The Marines often serve as the first military force to respond to crises. Marines are organized into units called Marine Expeditionary Units (MEUs), which can be deployed quickly to support operations worldwide. They are equipped with a range of advanced weaponry and vehicles, enabling them to conduct ground, air, and sea operations effectively. Their motto, "Semper Fidelis," means "Always Faithful."