My 16-year-old son is called to the military commissariat to register.

No, in no case does this mean the mobilization of minors. According to the new order of registration of conscripts, which came into effect on January 5, 2023, they receive the status of a conscript (not even a conscript) and begin to be registered in territorial recruitment and social support centers (TCC and SP). A young man must register for the military when he turns 17, but no one will mobilize him at the age of 16.