(All factions listed in clockwise order)
The Scourge (NPC): Weakened but from far from defeated by the troubles caused by the attempts on the Lich King's life, the Scourge still holds much of Northrend and Lordaeron and when the Lich King finally awakens it is almost certain that the hordes of the undead will soon descend on the living. Even now his lieutenants set out to weaken the Scourge's rivals in anticipation of that day. The remnants of the Silver Hand are an obvious target, even though many of them have grown adept at slaughtering the undead, and from there the treacherous Forsaken can be dealt with before the living to the south may be scourged. Still, they must note that the living have developed countermeasures to the Scourge's usual tactics and little better can unite them than their hatred of the undead. United, they might drive the Scourge from Lordaeron and Quel'Thalas and even Icecrown could be under threat.
The Blood Elves: 90% of all High Elves were slaughtered when the Scourge invaded Quel'Thalas. 1% of them were outside the country and were able to avoid the worst of the Scrouge. The remaining 9% have become Blood Elves, the vengeful remnants of the Elven kingdom. However, there are even fewer than that these days. Prince Kael'thas was betrayed and imprisoned by Marshal Garithos, along with the elite troops that went with him to aid the Alliance. Now Regent Lord Lor'themar Theron leads the Blood Elves in trying to retake Silvermoon, a seemingly hopeless task. Not only are the Undead without number but the Blood Elves are slowly withering away from their addiction to magic, which can no longer be satisfied after the destruction of the Sunwell. But, a civilization like Quel'Thalas does not die quietly and every Blood Elf warrior is able and willing to slaughter as many Undead as it takes to rebuild his homeland.
The Amani Tribe: Few celebrated the coming of the Scourge, but the trolls of the Amani tribe, seeing their elvish enemies driven before the Scourge, could barely contain their pleasure. Once the undead moved on, it would be the perfect moment to at long last retake their ancestral lands. But the undead have not moved on. The magics of this land were too invaluable to ever surrender and the undead have crept ever closer to Zul'Aman, prving to be a greater threat than the elves ever were. Zul'jin will have to use all of his cunning and skill to keep his people safe.
The Silver Hand (Scarlet Crusade): A realm as great as Lordaeron does not die with its king, or even its capital. As High Marshal Garithos wasted much of Lordaeron's remaining forces as well as those of his allies though his bigotry and incompetence the Order of the Silver Hand, Lordaeron's order of paladins, managed to hang on, securing a few key positions in the kingdom and even though what's left of the expedition has retreated, these holy warriors have refused to abandon their country. The Scourge must be defeated and a paladin fights to the end, no matter the odds. While the Scourge is no longer dividing against itself, it still shows some signs of vulnerability, particularly around Stratholme, which Saidan Dathrohan is considering as the Order's next target.
The Wildhammer Clan: The Wildhammer Clan, ensconced on Aerie Peak, has not suffered like many of its neighbors at the hands of the Scourge. Their lands are too remote for most opponents and the Gryphon Riders, too fierce for most enemies to risk prvoking. But they have problems just the same. Their lands in Khaz Modan are imperiled by the resurgent forces of the Dragonmaw Clan and in Lordaeron, the trolls and the humans of the Syndicate are growing bolder. Aerie Peak may soon be threatened and the Wild Dwarves will to have to act to protect their mountains...
The Vilebranch Tribe: Unlike their kin to the north, the Vilebranch tribe is not threatened by the Scrouge. The mountains around the Hinterlands have bested many foes and the living dead are no different. In fact, the recent collapse of Stromgarde has left the Vilebranch free of their accursed human foes for the first time since the rise of the ancient empire of Arathor. However, while the Wildhammers are preoccupied with the undead and the orcs in the south, they can easily wreak havoc on the Vilebranch, and must be considered carefully if the tribe is make use of these developments...
The Boulderfist Ogres: The Humans have never been this much fun! After getting tired of killing ogres and trolls they started killing each other. It started with the son of their chief killing his father and then they all started killing each other. Of course the Boulderfist ogres proceeded to get the trolls to fight for them and they have taken nearly half of Stromgarde. A little more pushing and that big stone chief's house will belong to the Boulderfist!
The Syndicate: Alterac never truly died. While the city was left to rot by the Alliance, the kingdom's nobility never forgot their homeland. They went into hiding and organized the peasants from the shadows, building an army to retake Alterac. With the Alliance fleeing, the Syndicate has emerged from the shadows. Much of Alterac and Stromgarde is under their control and more will come if the Alliance withdraws completely. True, there are still many enemies, especially the accursed Ogres squatting in the ruins, but like a phoenix Alterac will rise from the ashes of Lordaeron.
Stromgarde Remnants: There was no reason for it to be this way. Stromgarde was secure from the Plague and the Scourge. The ogres and trolls were suppressed. And Stromgarde's army was as power as it had ever been. King Thoras Trollbane was even willing to back Jaina's expedition to the ends of Azeroth on the word of a mad prophet. But that all changed when Prince Galen Trollbane was found over his father's dead body. The Prince insisted he had no idea what had happened. His mind had gone black and he only came to before his father's dead body. Some suspected possession but others, knowing the Prince's dark and violent temper, suspected far worse and refused to obey Prince Galen. The kingdom fell into civil war and the armies of the kingdom bled themselves white on each other when there were all too many enemies to slay. The rebels of the Syndicate invaded and the ogres and trolls rose up. To make matters worse Tol Barad refused to support the throne and sought Kul Tiran protection, which the late Admiral Proudmoore, due to his resentment of Stromgarde's leaving the Alliance and the potential patricide, granted.
Prince Galen has won the civil war but many fear he won't be able to regain his kingdom. Much of the kingdom is in a series of refugee camps and Stromgarde Keep itself is in ruins. But he has veteran troops and he knows humanity can't afford to lose more land. With skill, diplomacy, and a bit of luck, he might able to pull of a miracle.
Frostwolf Clan: While most of Thrall's Horde has been content to stay in Kalimdor, the Frostwolves felt duty called back to the Alterac mountains. Chaos has unfolded in their absence and their homeland must be preserved before they can truly be at peace. They wish to avoid conflict but are under no illusions it can avoid them forever.
The Alliance Expedition (NPC): As Lordaeron fell the remaining nations of the Alliance sprang into action. Kul Tiras, Ironforge, and Stormwind were quick to send men to fight wit the remaining men of Lordaeron to stop the undead. The situation was dire but far from hopeless and a leader like Anduin Lothar or King Terenas might have saved Lordaeron. Unfortunately, High Marshal Garithos was in command. As one solider put it...
"For pure, unstinting stupidity, for superb incompetence to command, for ignorance combined with bad judgement - in short, for the true talent for catastrophe - Garithos stood alone. Others abide our question, but Garithos outshines them all as the greatest military idiot of our own or any other day. Only he could have led the men of Lordaeron to such a ruinous defeat. It was not easy: he started with a good army, a secure position, some excellent officers, a feral, soon-to-be divided enemy, and repeated opportunities to save the situation. But Garithos, with the touch of true genius, swept aside these obstacles with unerring precision, and out of order wrought complete chaos. We shall not, with luck, look upon his like again."*
*With all regards to Flashman.
True, towards the end he was influenced by a dreadlord, but the loss of the Blood Elves and the failure to accomplish any meaningful objective, outside sweeping the remaining Scourge from Dalaran ultimately was caused by his bigotry and incompetence and after the slaughter of himself and his army in Lordaeron the remaining troops have formed up in Hillsbrad. The sponsor nations have a choice: order the men back home to deal with the problems developing in their homelands or keep them there and attempt to salvage the expedition.
Crushridge Ogres: Mug'thol's head hurt. The pretty ghost sent him to get a shiny crown from a wrecked city. It was so shiny he had to wear it. The crown shocked his head and he decided he didn't want to work for the pretty ghost no more. He wanted to hold this stone fort and loot the land. True, this Syndicate humans seem to want his fort but it's his. They can't have it! He'll smash them first!
Kul Tiras: When the Alliance crumbled after the Second War only a few human nations remained: Lordaeron, Dalaran, Stormwind, and Kul Tiras. Admiral Proudmoore had fought on the frotnlines and had seen his lands ransacked by the Horde and he knew humanity must stand together in the face of such crises. During the Third War he ensured Kul Tiras contributed what it could to Lordaeron and his fleets ensured the stability of Tol Barad as Stromgarde fell into civil war. However, he could not forget that his daughter Jaina, had disappeared while leading a fleet of refugees and volunteers west and he ferociously pursued any rumor about her whereabouts. When he finally learned she had landed on a new continent called Kalimdor, he led most of the army and navy after her. Once there, he learned the Horde was building a new kingdom on Kalimdor and he immediately commandeered his daughter's position on Theramore Isle to wipe out the Horde before it could threaten humanity again.
Due to the actions of the Horde and his daughter, he was slain and much of Kul Tiras's military was lost. Now Admiral Tandred must decide the best way to deal with these losses.
Gilneas (NPC): Gilneas has been sealed behind the Greymane Wall since the Second War and this has remained the case despite the suffering outside of it and will remain the case until Gilneas is attack or King Genn Greymane dies. At this point, many hope it will be a painful combination of the two.
The Kirin Tor (NPC): For all Garithos's failure he did do the Kirin Tor a great favor by securing the ruins of Dalaran. The Kirin Tor has returned and after sealing off the city with a magical field, has occupied the town of Amberpine to pursue a project they refuse to discuss with anyone else. As they do this they will have to protect themselves from the Worgen, the Forsaken, and the Scourge. Whatever they are planning, it must be import to justify this sort of risk.
Worgen (NPC): When Dalaran was assaulted by the Scourge, Archmage Arugal sought to defend his home by summoning the worgen, wolfmen that had never been seen by any man before. While they proved effective against the undead, they turned on the human mages and as a result Arugal was forced to lead them away from Dalaran towards the Silverpine Forest. He has marked off the land for his "children" and warns all others to stay away or preapre to join the pack.
The Forsaken: The greatest threat to the Scourge may end up being the very undead it created. As the Lich King's power waned some of the Scourge began to break free from his control. Among these was Sylvanas Windrunner, an eleven ranger turned undead as punishment for harrying the Lich King's campaigns. Using all her skill, she managed to break many undead from the Scourge's control and broke the power of the Dreadlords who ruled the Scrouge in the Burning Legion's absence. She also used and betrayed the Alliance Expedition, slaying Marshal Garithos along with many of his soldiers. Having set herself as Queen of the Forsaken in the catacombs of the city of Lordaeron, which she has named the Undercity, she plans her next move to protect her unliving subjects and to avenge herself on the Lich King. The Scourge remnant on Fenris Isle must fall first and the humans must be pushed aside so she can invade the Scrouge's remaining holdings. In the back of her mind a question nags at her, if she succeeds she will have an Empire. What will she do with it?