Why can't the photos of military training instructors be uploaded to the Internet?

Photos of military training instructors are not allowed to be uploaded to the internet, because soldiers are related to national security and have certain confidentiality.

Soldiers have no hukou, only collective hukou. Their actions are confidential. In various media reports, the term "a certain group army" and "an artillery brigade" often appears, because the specific designation of the army is a state secret. Similarly, the relevant actions of instructors in teaching can not be made public, otherwise it may seriously cause leaks and endanger national defense security.

It may also be a habit formed by instructors in the army, and they don't want to make public or pretend. Originally, the duty of soldiers was to protect the people, not to enjoy themselves. Soldiers are a noble profession, and their own units will punish them accordingly after exposing their identity as soldiers.