Becoming a Guard at the Tomb of the Unknown Soldier is a profound honor, steeped in tradition and discipline. Only members of the 3rd U.S. Infantry Regiment, known as The Old Guard, are eligible for this prestigious role, involving a rigorous selection process. Candidates must be in peak physical condition, capable of standing for long periods and mastering precise movements. They must memorize seven pages of detailed information about Arlington National Cemetery and the Tomb itself, understanding its history, the changing of the guard procedures, and the significance of the soldiers interred there. The training is intense, emphasizing discipline, dedication, and precision, including the famous 21-step walk that symbolizes the highest military honor. Sentinels are on duty 24/7, guarding the Tomb in all weather conditions, with the guard change being a meticulously executed ceremony. The uniform is kept to the highest standard, and the guards live by a strict code of conduct, maintaining honor both on and off duty. This role is a lifetime commitment, where once you’re a Sentinel, you carry that title forever, embodying the nation’s enduring respect for its unknown soldiers.