SRS1 is the Main Infantry section of Alliance Gaming and most new recruits are assigned to this Division. Your service tag should look like this:

aG {RANK} | {PLT}-E&S | MI

The Special Operations/Recon section of Alliance Gaming. You must qualify according to Sungram's satisfaction. You service tag should look like:

aG {RANK} | {PLT}-E&S | SO

The Elite Navy Seal teams are compromised of the best gamers and leaders of Alliance Gaming. Your service tag should look like:

aG {RANK} | {PLT}-E&S | NS