"Oorah!" is a motivational call used primarily by the United States Marine Corps. It serves as a rallying cry among Marines, expressing enthusiasm, determination, and camaraderie. The term is often shouted during training, drills, and ceremonies to boost morale and foster a sense of unity. The origins of "Oorah!" are somewhat unclear, but it is believed to have emerged in the 1950s. It is similar to other military expressions like "Hooah!" used by the U.S. Army. The phrase has since transcended military use, appearing in popular culture and being adopted by various groups to signify motivation and support.