The police station has nothing to do with the army.
Suggestion:
One: If the clothes have the name of the army (internal code or serial number) and have a name, it is easier to handle, and you can directly hand it over to the "Chengdu garrison headquarters Political Department".
If you don't know where garrison headquarters is, you can call 1 14. This is a public sign, there is no secret.
Two: If you only have a name, it will be more troublesome. I'm afraid you have to contact the Political Department of Chengdu Military Region to find out the names of all cadres.
Three: The officer's name has been entered in Baidu. Just to see if the officer has relatives or Baidu's own name on the Internet. Maybe you can meet him.