Most factions are tracked in World of Warcraft by the reputation a character has with each faction. Some groups that are not tracked as factions appear in the organization list.
In World of Warcraft a Characters main faction is chosen based on the race they pick. Alliance character races are Night Elves, Dwarves, Gnomes, Humans, Draenei, and Worgen. The Horde faction consists of the character races Trolls, Orcs, Tauren, The Forsaken, Blood Elves, and The Goblins.
Each joinable race have a starting zone and most have a city where players can gather, find vendors and trainers, and other facilities. Both factions have what are considered main cities which players gather: the Alliance in Stormwind, and the Horde in Ogrimar.
The Argent Dawn are a lawful good organization focused on protecting Azeroth from agencies that seek to destroy it, such as the Burning Legion and the Scourge. Based in the Eastern and Western Plaguelands as well as in Trisfal Glades.
The Argent Dawn is divided into branches based on location, each of which has its own ranking and structure. Non-members are not permitted to know the ranking of members of the organization, since that would make obvious targets of leadership figures, and the leader is not known to the public. This has sometimes resulted in the Argent Dawn being called a secret society. However, it seems their ranking structure is surprisingly simple; specific regions have a "Commander", who directly leads day-to-day activities, a council of officers, a group of elite templars, and then the body of membership. Templars have no real authority over standard members, but they are highly respected. Branches include the Brotherhood of the Light.
The Argent Dawn has no official headquarters, but small branches exist in several major cities including Stormwind and Darnassus. The majority of their members in the Plaguelands work out of the Light's Hope Chapel on the far east side of the Eastern Plaguelands, but a good number of them inhabit a camp at Chillwind Camp on the border of the Western Plaguelands and the Alterac Mountains as well. The templars at Chillwind have plenty of work to do. The courageous templars and knights have to contend with ogres to the south and an undead infested graveyard right on their borders.
Through its actions, the Argent Dawn has created several powerful enemies, notably the Burning Legion, the Scourge, and the Twilight's Hammer. Despite common interests (and an alliance at Light's Hope Chapel), there is also a great deal of mistrust, and even open ire, between the Argent Dawn and the Scarlet Crusade — particularly because the Scarlet Crusade views all non-members as potentially evil.
After Battle for Light's Hope Chapel Highlord Tirion Fordring declares that the Argent Dawn, and the Order of the Silver Hand will band together as one to take the fight to the Lich King with a united front. The Argent Crusade has effectively taken over the Argent Dawn. The Argent Crusade then later allies with Highlord Darion Mograine of the Knights of the Ebon Blade to create the Ashen Verdict to lead the final assault on Icecrown Citadel. Effectively from this point onwards the Argent Dawn and the Order of the Silver Hand have completely merged, and united under one banner.
The Bloodsail Buccaneers was one of these factions that originated from Bloodsail Hold on Plunder Isle that was ruled by Duke Falrevere, who held court during the events leading up to and following the Third War, several criminal organizations appeared around Azeroth. They now plot to plunder and cripple the Steamwheedle Cartel-controlled port city of Booty Bay, currently under the protection of the Blackwater Raiders. It is likely the Bloodsail Buccaneers have come to take advantage of the city’s current loss of its fleet off the coast of the Arathi Highlands, in which two of its ships were destroyed and the remaining ship forced to find shelter in a cove where its crew currently fights to survive skirmishes against the Daggerspine naga.
In preparation for the attack, the Bloodsail Buccaneers have taken up positions in key locations near the city. Currently, they have three ships anchored along the coastline south of Booty Bay, clear of the town’s defensive cannons, with camps also being built along the same coast in preparation for the attack. In addition, a scouting party has landed just west of the entrance to the city, reporting all activities, and a compound is being constructed along the road leading towards the city and will likely be able to stop any re-enforcements from coming to aid Booty Bay.
Both the Bloodsail Buccaneers and Blackwater Raiders seek to achieve their goals without having their forces engaged in battle; to this end each side now seeks the aid of adventurers sympathetic to its cause.
The descendants of the Bronze Dragonflight are the guardians of time and care little for the mortal races.
Brood of Nozdormu is a faction consisting of the bronze dragonflight. Their leader Anachronos can be found outside the Caverns of Time, with many of its agents flying in the sky of Silithus.
In order to open the gates of Ahn'Qiraj, one champion must complete a long quest line for the bronze dragon, Anachronos. This reputation is also relevant for the 40-man Ahn'Qiraj dungeon in order to obtain epic quest gear and rings.
The Cenarion Circle is an organization of druids, both tauren and night elf, named after Cenarius. Its members are dedicated to protecting nature and restoring the damage done to it by malevolent forces.
The Circle has many posts, but their main home is the town of Nighthaven in the Moonglade. IconSmall Druid Druids learn to teleport to Nighthaven using [Teleport: Moonglade] at level 14. Anyone else will have to wait to travel through Felwood and the Furbolg at Timbermaw Hold finding their way through the Timbermaw tunnels to Moonglade, (except Death Knights, who have all their faction's flight paths, in Kalimdor and Eastern Kingdoms, upon completing their start zone). Other alternatives include receiving a summon from a Warlock and 2 other players or waiting for the Lunar Festival which allows a teleport as part of the event quests.
Since the Shattering of Azeroth, they have set up a new base of operations at the Cenarion Wildlands in Desolace, where players can pick up quests to aid in their efforts to revitalize the once scarred lands.
The Circle's once held high presence in Silithus, where they combat the Silithid, the Qiraji, and Twilight's Hammer. While much of this has changed with the Shattering, Valor's Rest and Cenarion Hold still serve as bases in the hostile land, and offer a few opportunities to adventurers seeking to aid the druids.
The Darkmoon Faire showcases the weird and the extraordinary. Gathering the exotic from around the world, Silas Darkmoon presents the Darkmoon Faire as a celebration of the wonders and mysteries found in Azeroth. The Faire spends most of its time in parts unknown, they are available from time to time by accessing portals in Alliance Elwynn Forest and Horde Mulgore.
After Illidan's defeat at the Black Temple, many of his demon hunters were imprisoned by Maiev Shadowsong. When the Burning Legion started its third invasion on Azeroth, Gul'dan and Cordana Felsong sent Illidan's soul to the Twisting Nether, he contacted the remaining Illidari and named the demon hunter adventurer as their leader in his stead.