Addressing the ranks
You must address Militia to Master Sergeant by their rank, you may shorten their ranks such as "MSGT" instead of "Master Sergeant".
You must address any Commissioned Officer (Ensign - General) as "Sir" or "Ma'am" accordingly as a sign of respect for their dedication and hard work they have contributed to the group.
(New) Developers may be addressed as their rank or by their name.
You may address any rank lower than yours by their rank or name.