As one of these enlisted ranks in the army, your grade is E-1 or E-2; as a first class one, it's E-3
... as an Airman Basic (E-1) are promoted to Airman (E-2) after basic training 
is... [DOC] [TLE] Enlisted Rank Insignia - Enlisted Insignias - Department of Defense [PAR] Service members in pay grades E-1 through E-3 are usually either in some ... as 
the Navy except for color and the seaman recruit rank, which has one stripe.