Fighters Guild
The Fighters Guild, present across most of Tamriel, provides a common, and more importantly, public place of training and study for those of the warrior persuasion. The guild is a professional organization chartered by the Emperor to regulate the hiring and training of mercenaries, protect commerce, capture or drive away beasts, and similar security duties. Training, goods, and services are cheaper for members.
The Guild gained greater prominence at the beginning of the Third Era under Uriel I. Guild Stewards are entrusted with receiving and dispensing contracts to Guild members, hearing complaints about the servicing of said contracts, promotions, and determining the eligibility for re-admittance into the Guild of former members who had stolen from or assaulted other members.
The Forebears is the name given to a social and political group of the Redguards. The Warrior Wave of Ra Gada, or first invasion of Yokudans to reach Tamriel, are now known as the Forebears. They cleared the way for their rulers, the Totambu, and their faction, which is now known as the Crowns. The Crowns and Forebears represented the two halves of a highly stratified Hammerfell and fought a bitter civil war during the Common Era. Today they are at peace, though divisions remain. During the Third Era they were the most cosmopolitan of the Redguard factions and happily embraced the Empire of Tiber Septim. Recently a third faction, the Lhotunics, have emerged, representing a middle ground. Sentinel is a major Forebear city, even though it is the seat of the king.
The Forsworn, also known as the Reachmen, Witchmen of High Rock, and Madmen of the Reach, are a tribal group of racially-mixed (but primarily Breton) ancestry who inhabit the Reach in southwestern Skyrim. They mainly utilize primitive gear and hedge-magic, have a tribal appearance and nature, and typically inhabit makeshift fortresses built into caves and ruins throughout the Reach's battle-scarred landscape. The tribals are often considered "two septims short of a pint of ale". Despite appearing primitive in nature, the Forsworn have proven to be an aggressive political force which has an astute grasp of insurgency warfare, and even have agents living amongst the populace of Markarth in secret. They directly oppose all other major political groups in Skyrim, including the Thalmor. They wish to drive both Nords and the Empire out of the Reach and attain independence.