Yes. Yes you do. You have to be an upstanding member of this forum, follow the rules as they are found for THE ENTIRE FORUM, not just the Imperial Guard section. You have to show exemplary support of the Imperial Guard, and, naturally, answer to your higher ups, report any misconduct on the Imperial Guard board to a moderator. Either myself, my Marshall, or one of the 40kO Administrators (Rasmus seems to be a popular choice, but there are others) will do (To note, this can be done by using the "Report to Moderator" function attached to every post).
Otherwise, pretty much what would normally be expected of you as an upstanding member of the forum community.