Sphinxes [Etc.] of Nefret

In Nefret, the role that would traditionally be served by dragons in other fantasy settings is instead served by Sphinxes.  Because of this, one partocular aspect of the 3.x rules needs to be modified:  Creature types.  With so few dragons and dragon-kin in the world, it does not make sense for "Dragon" to be a unique creature type.  On the other hand, the prominence of sphinxes and sphinx-kin  may benefit from the creation of a "Sphinx" creature type.

Another aspect related to this that was already changed in play was the replacement of the Draconic language with the Sphinx language where it applies to arcane magic.  Furthermore, sorcerers do not have the option of a draconic bloodline (neither a sphinx bloodline, for that matter).

Warriors of Monvesia - Men-at-Arms

RETCON NOTE:  See also "Warriors of Monvesia - Mystics."

Martial traditions can be grouped into two basic categories:  a formal caste of men-at-arms, and ascetic mystics.  The first group share in common, among other things, a series of fighting styles.

Additional fighting style options for Fighters, Paladins, and Rangers can be found in Unearthed Arcana, including general and class-specific styles, as well as "underdark" styles.  The former link also includes enhancements for the class features of all three classes discussed below.

Fighter

The majority of fighters are Champions and Battle Masters.  These can commonly be found as heroic soldiers and officers, but these martial archetypes are by no means bound to military service.

Among elves, the Eldritch Knight is as common as any Champion, and possibly more common than Battle Masters.  As highly magic beings, merging the martial and mystical arts is natural to them.  Any who wish to learn the ways of this archetype may study with the elves.

Brutes (Unearthed Arcana) are commonly found as street thugs and gladiators, and not among the military orders of Monvesia--though they may be conscripted into formal service.

Bannerets (Sword Coast) are mercenary and noble officers who are assisted by Battle Masters in leading troops of Champions.  While Champions and Battle Masters may exist outside the strict hierarchy of military service, the Banneret does not.

Cavaliers (Xanathar's Guide) often stand alongside Battle Masters and Bannerets as officers of a noble or mercenary forces. Some may also serve as knights errant, wandering the countryside and offering their services as their conscience (or purse) may dictate.