Full sized medals for Blues and Greys. Miniatures on a suit. Pinned at the top of the chest pocket. Some guys wear their blazer crest on their side pocket because it gets covered by your medals on the top pocket. Lots of people use collar dogs, wings , etc. Commendations can be worn in their normal spot with the medals. Remember, you're retired. Do what you want and don't let anyone persuade you otherwise. I normally wear a small unit insignia (tie tack) and my CD pin on my left lapel.
Usually you just see medals, but it’s up to you depending on the nature of the event and setting. You’re gonna be poking the person to your left in the arm with your rack anyway.
