Hi there 
  
I've noticed that a few people in war games and the like have got a funny little symbol after their names on War games play list and in spartan ops. 
  
Now in reach and Halo 3 you could go on Bungie.net and sign up for one. There were mulitple insignias that you could add after your name depending on what other games you had played. I used to use one from Marathone man Durandle ( it was remenisant of some of the tattos I've got + very few people had bothered to download the game so rare) 
  
Now since I've seen them appearing again i would like to know how to get my grubby little fingers on them 
  
Been playing since Halo 1 and will continue to play forever