* recruitment department. Whenever the recruitment season comes, the recruitment department will contact the relevant local departments and tell everyone which troops to recruit. So you can learn about the troops through the recruitment department.
:: Recruit cadres. Every recruitment season, there are many recruiting cadres coming to work in every city. You can learn about the troops through them, such as the size, environment and responsibilities of the troops.
* Recruitment publicity. In the recruitment season, the recruitment department often issues recruitment notices, mainly including the recruitment target, registration conditions, registration time and place, and other related matters needing attention. You can learn about the army's serial number and other information in the conscription announcement.
In short, parents of children who are soldiers want to know the relevant information of the army, which can be learned through the above channels. I suggest that you can also consult the local authorities to get the most accurate answer.