In the past months DICE has set up community challenges for Dog Tags. These challenges are far from easy for the community. The challenge for January is to reach combined team score of 10 Billion in just five days! All though every challenge DICE has thrown at the community has been crushed this months by far is the hardest one. If the community reaches this goal they will recieve their fifth comunnity dog tag.



Just playing the objective will not give you this dog tag BF3 community. There are certain Team actions you would have to accomplish:

Challenge: Reach 10 billion (10,000,000,000) in team score

When: Starts Midnight GMT From January 25th-29th

Who: All Battlefield 3 players, all platforms work together

Eligible team actions for this challenge:
Revives
Savior kills
Heals
Ammo resupplies
Spot assists
Squad attack orders
Squad defend orders
Repairs

Source: http://battlelog.battlefield.com/bf3/news/view/2832654790673361567/