Can active duty military personnel in my country travel to Hong Kong as individuals?

No.

Applicants must be permanent residents of the city.

The applicant must be 18 years old or above when receiving the pass;

There is no record of engaging in illegal activities in Hong Kong or Macau

At the same time when applying for the endorsement Required conditions

It is impossible for military personnel, policemen, and armed police to apply for personal travel. You can only apply for it in the army.

Even civil servants, legal persons, and financial personnel must be strictly scrutinized. Usually only for business.