User blog comment:CoolJazzman/Stern Ritter count/@comment-11405437-20130630060433/@comment-6904925-20130630093105

Well it was never stated that only the Stern Ritters have letters, there obviously for any Quincy of captain level, plus he was fighting Ichigo in Huceo Mundo at the time, also he was the captain of the first hunting squad, means there's more hunting squads. (There might be even more teams in the Vandenreich army that we haven't seen yet)