Run. Shout "Run" at the beginning, "One Two One" when running, and "Stand still" when running. You can tick in the middle, such as "train hard" and "fight hard". Soldiers are special occupations produced by social division of labor, and bear special social roles in defending national security. A career officer refers to an officer who has served in the army for a long time until he retires or is discharged from the army after voluntary selection, appointment and examination in accordance with the regulations on service.