"Oorah" is a motivational call used primarily by the United States Marine Corps and other military branches. It serves as a rallying cry to boost morale, signify enthusiasm, and express camaraderie among service members. The term is often shouted during training, drills, and various military activities. 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 and "Hooyah" used by the U.S. Navy. Each of these terms fosters a sense of unity and pride among troops.