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|Previous: Third war|
|Place: Northrend, Kalimdor and Eastern Kingdoms|
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Prelude: Second Scourge InvasionEdit
After Arthas Menethil merged with Ner'zhul to form new the Lich King, the resulting force destroyed much of Icecrown. After his accession, the Lich King remained on his Frozen Throne, while the Scourge forces rebuilt Icecrown Citadel. While he dreamed, the Lich King would continue to control the Scourge with an iron fist, spreading his influence as deep as the Barrens of Kalimdor, while he trusted Kel'Thuzad with the Plaguelands. After seven years of dreaming, the Lich King awoke to begin a new war against the living.
Having his cultist deliver plagued grain to all capital cities of the Horde and the Alliance, the Lich King's plan was the same as his old plan: spread the plague of undeath as far and as fast as possible. Any who came in contact with th grain would die almost instantly. While the people in the cities died, the Scourge would use attack in specific locations around Azeroth with floating Necropolis' to draw the attention of the Horde and the Alliance's armies. However, unlike the Third War#Scourge of Lordaeron, the factions had enough time, and preparations to create a cure for the plague to cut stop it's spreading in its tracks.
With the plague stopped, the question now was how to deal with the Lich King. Some time before the Second Invasion, King Varian Wrynn returned to Stormwind. He needed very little provocation to go to war with the Scourge. Thrall of the Horde however, did not want to blindly throw men at the Scourge without a well thought out plan. Garrosh Hellscream however demanded action, and felt that Thrall was to weak for the Horde and challenged him to a duel for the title. As the two fought, Orgrimmar and Stormwind were both attacked by the Scourge. Though they were repelled, it was all that was needed for both the Warchief and the King to send troops to Northrend, thus creating the Horde Expedition and the Alliance Vanguard.
Invasion on NorthrendEdit
The Orgrimmar's Warsong Offensive, lead by Hellscream, landed in the Borean Tundra, while the Forsaken's Hand of Vengeance fleet landed in the Howling Fjord. As the Horde moved deeper into Northrend, they discovered the Taunka, a racial offshoot of the taurens, who was fighting a losing war with the Scourge. With the Horde's aid, the Taunka survived and joined the Horde to reclaim their homeland.
Meanwhile, the Alliance fleet of the Valiance Expedition also landed in Borean, taking the only viable port in the region, and in Howling Fjord, where they landed in the old Lordaeron settlement of Valgrade, the settlement made from the survivors of Arthas' mission to Northrend. As they moved deeper in Northrend, the Alliance allied Explorers' League discovered a tribe of dwarves, the Frostborn who were connected to their past.
Angrathar the Wrath GateEdit
As the Alliance and the Horde fought through their landing points into the Dragonblight, they both had to deal with two threats before focusing on Agrathar the Wrath Gate: Naxxramas and the reconstructed Kel'Thuzad, and the undead nerubians of Azjol'Nerub. While the Alliance at Wintergarde Keep delt with Naxxramas, while the Horde of Agmar's Hammer combated Azjol'Nerub.
With the two threats beaten for the time being, the Horde and the Alliance set of bases outside the Wrath Gate itself. To combat the larger threat, the Horde and the Alliance set aside their differences for this battle, similar to the opening of the Dark Portal. The Alliance, lead by Bolvar Fordragon, attacked the gate first, without the Horde. Seeing the Alliance under heavy assault, the leader of the Horde troops, Saurfang the Younger lead his troops into battle and united the two factions destroyed the Scourge forces and turned the Wrath Gate itself.
Bolvar called the Lich King, telling him his father and his people demanded justice. The Lich King opened the gates and challenged to two generals, raising a new army of undead as he walked. Saurfang the Younger, charged the Lich King but was struck by the Frostmourne. He was dead before he hit the ground, his soul claimed by Frostmourne. Before Bolvar could attack the Lich King himself, he, his forces, and the Horde were betrayed by a rogue faction of the Forsaken, the Royal Apothecary Society lead by Grand Apothecary Putress and their new plague. Putress unleashed this new plague, that was designed to kill the Scourge and the living on both armies, killing hundreds including Bolvar. The Lich King was injured, but survived, retreating back into Icecrown Citadel. The red dragons, under Alexstrasza flew to the Wrath Gate and used their flames to destroy the plague, with Alextrasza and Korialstrasz remaining to instruct any survivors to bring the armor of Saurfang, and the sword of Bolvar back home.
Continuing the war Edit
Hope arrived however in the forms of the Argent Crusade and the Knights of the ebon Hold, who traveld to Northrend to battle the Scourge and it's allies, the former to save the world, the later for Vengeance at the Battle for Light's Hope Chapel. They managed to fight through Zul'drak since the wrath gate could not be pierced, and managed to have a strongolhd in Icecrown themselves.
The Horde and the Alliance however, their hatreds for each other growing once more, were stuck in the Grizzly Hills fighting each other and the local enemies there. Gunships made by the best minds goblins and gnomes had to offer, flew to icecrown instead, aiding the Adventurers and the few forces the Factions have left there.
the Argent TournamentEdit
The Argent Crusade, in a last attempt to birng the two factions together, held a tournament in Icecrown themselves, uniting the two factions to fight a common foe by participating in a Tournament.
the war is ongoing.