Intermediate noncommissioned officers are an important training before selecting senior noncommissioned officers. The training of intermediate petty officers is an important training for intermediate petty officers before selecting senior petty officers. Intermediate training is a necessary step in the process of cadre promotion, and army cadres are promoted to intermediate command colleges for training. Intermediate noncommissioned officers include staff sergeant and fourth-grade noncommissioned officers. If you start from a compulsory soldier or a compulsory soldier or corporal school, then the full-time staff sergeant is a soldier of 12 years, and the full-time master sergeant is a soldier of 16 years.