Royal Guards

Royal Guard like it's namesake was meant to Protect and Serve members of the Royal Family, they seems to be Garrisoned inside the Pendragon Imperial Palace on the Britannian Mainland whether or not it's true it's remain to be seen. there seems to be a Royal Guard Branch of Knightmare Corp. as seen during the Knights of the Round Uprising where they was commanded by Monica Kruszewski. Whatever happen to the Royal Guard during Lelouch rise to power is not being made clear whether they Join the Uprising or absorbed into Lelouch Royal Guard.

Lelouch's Royal Guard
Lelouch had a royal guard that wore black uniforms and  commanders wore capes they were geass by lelouch to serve.

Schniezel's Royal guard
Led By Kanon Maldini They were schniezel's subordinates and protected and carried out his order the wore green suits with white capes,and sometimes a cape.

Cornelia's Royal Guard
The Glaston Knights served as cornelias main guards but she also utilized the glaston knight and many royal guards.

Emperor's Royal Guard
They were mainly palace guards that served the the emperor they were know to use staff like weapons.

Knights Of The Rounds
The K.O.T.R were known to Have Their Own private Forces they attack emperor lelouch but were defeated.