Enlistment is the process by which individuals join the military forces of a country. This typically involves signing a contract that outlines the terms of service, including duration and responsibilities. Enlistment can occur in various branches, such as the Army, Navy, Air Force, or Marine Corps, depending on the individual's interests and qualifications. Once enlisted, individuals undergo training to prepare for their roles. This training can include basic combat skills, physical fitness, and specialized instruction related to their assigned duties. Successful enlistment often leads to a career in the military, providing opportunities for personal development and service to the nation.