1, when wearing a hat badge, there is something like a pin at the back, which is inserted right above the brim. Be careful not to hold it askew. It's best to wear it on your right hand.
2. Wear it on the collar, and indicate the name, position, department, issuing time and serial number of the wearer on the front or back.
3. Wear it on the epaulettes. There are two holes behind the epaulettes. Insert the strap on the upper shoulder of the clothes into the hole, and then button it to finish wearing.