The clan tag for the clan is (2PR) depending on what your role in the clan is you will have a letter representing your role within the clan, for example say that I am a rifleman then my clan tag would be (2PRR). The R at the end meaning rifleman. The letters that represent all of the roles the roles in the clan are a listed:

Rifleman = (2PRR)
Sniper = (2PRS)
Pilot = (2PRP)
Machine Gunner = (2PRG)
Heli crew Cheif = (2PRH)
Engineer = (2PRE)
Instructor = (2PRI)

If you have any thing to do with Helicopters then your clan tag will be (2PRH)