After the recruits join the army, they must first accept the recruits' company for a period of three months (some arms are two months, and the third month is the internship period). After this period, they will enter the formal service stage. This work is completed by the police department under the headquarters (the department that manages the relationship between soldiers and personnel/files). The first thing depends on which company you are assigned to. After you arrive at the company, you will be assigned to a specific work department. If you want to be assigned to a good company or the company you want to go to, then.