Hey guys,
What’s up. I’ve recently been trying to find all my medals I’ve ever earned in Halo 4 but I can’t seem to locate them. I looked under “War Games: Matchmaking” but only found my most recent medals and a number representing my over all medals. But I can’t actually find what they all are like in halo 3 or Reach. Please help if you can. Thanks. 
Stats > War Games: Matchmaking > Move along to the right once and choose Medals.
Sadly, medals are only viewable in their sections such as ‘Bonus/Style’, ‘Assist/Support’, etc.
It will show all the medals you’ve achieved and haven’t achieved with descriptions on how to get them.
Thanks so much!