I think Phalanx is a good name, however Marvin's post brought the name Paladin to light.
Here are some blatant Wiki rips:
Quote:The term paladin was first used in Ancient Rome for a chamberlain of the Emperor, and also for the imperial palace guard
Quote:In 19th century Britain and Germany, paladin was an official rank and considered an honorary title for one in service of the emperors.
Quote:The official title has gone out of fashion, but the word "paladin" is still used to describe a benevolent, heroic champion, or the defender of a good cause.
It's your choice, but those seem pretty fitting to me.
That is all of course if that name isn't already taken.