毎回探すの面倒くさいのでメモとして転載。
Lv19: Hero
Lv18: Titan
Lv17: Dragon Hunter
Lv16: Master Swordsman
Lv15: Holy Knight Commander
Lv14: Holy Knight
Lv13: Master
Lv12: Champion
Lv11: Battalion Leader
Lv10: Platoon Leader
Lvl 9: Senior Squadsman
Lvl 8: Squadsman
Lvl 7: Novice Squadsman
Lvl 6: High-ranking Soldier
Lvl 5: Low-ranking Soldier
Lvl 4: Enlistee
Lvl 3: Bodyguard
Lvl 2: Cadet
Lvl 1: Civilian
ちなみに今はLvl 9: Senior Squadsman
引用元
List of AC+/ACR Ranked Match Ranks - Guilty Gear Online Play - Dustloop Forums