You might be wondering how to get those cool custom dog tags you see everyone using each time you get killed in game.First of all, make sure when you are looking at your dog tags you SCROLL DOWN the list even though most or all of the dog tags you see are blacked out.
Check out the link below for more details … but you can watch the Act of Valor movie trailer (about 3 mins, 17 sec long) and afterward you are prompted for Xbox, PS3 or PC. Click your choice. For the Xbox I can tell you after you’ve seen the screen telling you that you’ve redeemed the dog tags sucessfully, the next time you log in to BF3 you will see a notification of new dog tags.
Here’s the post with links for free BF3 dog tags (ignore the Dr Pepper expiration date, just go to their website).
ADDITIONAL IMPORTANT NOTE: ADVANCED DOG TAGS (RIGHT SIDE)
If you want to use the Advanced Dog tags, from game unlocks, you must have 50 kills with the knife (assassinations) first. The dog tags above, and possibly others that are given away, are not subject to the 50 knife kills rule.