From the rules:
The following three rules are presented to all players the first time they play a game with other players:
You shall be respectful to other players at all times.
Racial slurs, personal attacks, excessive profanity, or any other offensive language will not be tolerated.
You shall not operate more than one Warzone account in a way that gives you an advantage in a game, tournament or ladder.
You may never operate or access more than one account with a coin balance or that plays coin games, and that account may never be used by another person.
It's also important to note that additional rules exist in the Warzone terms of service. These rules aren't displayed as prominently since they're common sense, but they still apply. Examples include, but are not limited to, impersonating other players, rigging games, launching denial-of-service attacks, or using someone else's account without their permission.
Additionally, since Warzone displays ads, players must also abide by the rules imposed by the advertisers. The following is not allowed to be submitted or linked to:
pornographic content or links to pornographic content
erotic stories or descriptions of sexual acts
erotic or sexual forums
These rules apply to account naming as well. Therefore, sexual references (such as the one that was in your name) are indeed prohibited. However, naming your account after a historical figure is not directly a racial slur, a personal attack, or offensive language, much less sexual in nature. So such a name will stand.
Edited 7/26/2020 08:45:08