The following is a combination of different timelines that are bandied around. If you have any feedback, please speak up!
~ The Titans and the Shaping of the Universe - found as an in-game book under its alternate title "Mythology of the Titans"
~ Sargeras and the Betrayal (Minus Eredar related events)
~ The Old Gods and the Ordering of Azeroth begins
~ The Old Gods and the Ordering of Azeroth ends
~ Charge of the Dragonflights
~ The Waking World and the Well of Eternity
~ The first Night Elves or "Kaldorei" appear and found their civilization upon the banks of the Well of Eternity
~ The Kaldorei begin to actively study and practice arcane magic. They bend magic to their will and use it to build beautiful cities, craft artifacts and reshape the land. Some Kaldorei resist the lure to use the Well of Eternity’s power and warn others of the dangers of abusing it. Their warnings go unheeded. A group of upper-class Kaldorei begin to refer to themselves as the Highborne and revel in the use of magic.
~ The War of the Ancients - First invasion of the Burning Legion. The Night Elves are victorious.
~ The Demon Soul - The dragons ` led by the powerful Black Dragon Aspect, Neltharion (aka Deathwing) - have forged a weapon of incalculable power: the 'Dragon Soul', an artifact capable of driving the Legion from the world forever.
~ The Sundering of the World - the world is shattered into two continents
~ Mount Hyjal and Illidan's Gift - a new Well of Eternity.
~ The World Tree and the Emerald Dream - Alexstraza grows the World Tree - Nordrassil
~ Exile of the High Elves begins - The Highborne, or Quel'dorei, as Azshara had named them in ages past, would eventually set shore upon the eastern land men would call Lordaeron. They planned to build their own magical kingdom, Quel'Thalas, and reject the night elves' precepts of moon worship and nocturnal activity. Forever after, they would embrace the sun and be known only as the High Elves.
~ The Sentinels and the Long Vigil - Druids enter the dream and Tyrande assembled a powerful fighting force from amongst her night elf sisters. The fearless, highly trained warrior women who pledged themselves to Kalimdor's defense became known as the Sentinels.
~ The Founding of Quel'Thalas begins - Dath'Remar, who had taken the name Sunstrider (or "he who walks the day"), settles in norhern Lordaeron, before moving north and founding the kingdom of Quel'Thalas.
~ Exile of the High Elves ends
~ Arathor and the Troll Wars - The human tribes are defeated by one tribe, the Arathi and all unite into the the city-state, named Strom, which became the capital of the Arathi nation, Arathor. The humans ally with the High Elves and are taught magic.
~ The Guardians of Tirisfal - The second Arathorian city-state of Dalaran was founded in the lands north of Strom. Demons begin to be drawn to their use of magic and so a single champion, a Guardian is appointed and empowered by the humans and elves to be able to single-handedly fight off the low-level threat from the Burning Legion.
~ Ironforge - the Awakening of the Dwarves - Though it is unclear what awakened them, the earthen sealed within Uldaman since the Sundering, eventually arose from their self-imposed slumber. The dwarves crafted a mighty forge as an altar for their Tital father within the heart of the mountain they named Khaz Modan (or Mountain of Khaz). Thus, the city that grew around the forge would be called Ironforge ever after.
~ The Seven Kingdoms - The Magocrats who ruled Dalaran founded the Kirin Tor. It was during this period that humans first met the ancient race of dwarves. The lords of Strom built a new city-state which they named Lordaeron. The descendents of the Arathi founded the kingdom of Stormwind. Strom developed into a new nation known as Stromgarde.
War of the Shifting Sands - Staghelm and the progeny of the 4 dragon-flights seal the Silithid onslaught behind a magical barrier within the walls of Ahn'Qiraj.
~ Aegwynn and the Dragon Hunt - Aegwynn kills Sargeras's body and traps it below Kalimdor not knowing his spirit transferred to his body
~ Last gnome royalty
~ War of the Three Hammers - The three dwarf clans feud.
~ Dwarves meet gnomes
~ Gnomeregan is built
~ Kil'jaeden and the Shadow Pact - Kil'jaeden discovers Draenor, home to the Orcs and Draenei. With his guidance, Gul'dan forms the Shadow Council and is taught the Warlock arts.
~ Rise of the Horde - Grom Hellscream, and all the clan chiefs except Durotan drink Mannoroth's blood and thereby seal their fates as slaves to the Burning Legion.
~ The Last Guardian - novel by Jeff Grubb taking place in the Warcraft Universe during the beginning of the First War, recounts Medivh's struggle with his demonic corruption.
~ The Dark Portal (and the Fall of Stormwind) - Through a joint effort, Medivh and the warlocks of the Shadow Council opened the dimensional gateway known as the Dark Portal.
~ Warcraft: Orcs & Humans - Blizzard's RTS and first game in Warcraft series. Orcs declare war on the humans.
~ The fall of Stormwind - Orcs have brought Stormwind to smoking ruins, first war ends.
~ The Alliance of Lordaeron - Warcraft II - Tides of Darkness. The leaders of the seven nations unite with High Elves and Dwarves in what was to become known as the Alliance to fight back the Orc invasion. The Orcs were defeated and put in internment camps, Stormwind is retaken and Nethergarde built to watch over the Dark Portal.
~ Warcraft 2X: Beyond the Dark Portal - expansion pack to Warcraft II - Tides of Darkness
~ The Invasion of Draenor - Ner'zhul reopens the Dark Portal to gather artifacts from Azeroth. King Terenas of Lordaeron, convinced that the orcs were preparing a new invasion of Azeroth, ordered General Turalyon and the archmage, Khadgar, to lead an expedition through the Dark Portal to put an end to the orcish threat once and for all. Several portals to other worlds are opened and the energies rip Draenor apart. Turalyon and Khadgar destroy the portal from the Draenor side, saving Azeroth, but costing them their lives.
~ The Birth of the Lich King - Kil'jaeden forces Ner'zhul to continue to serve their blood-pact by encasing his spirit within a frozen cask and became the Lich King. Ner'zhul was to spread a plague of death and terror across Azeroth that would snuff out human civilization forever, and turn those that rose into undead - liches that would be bound to Ner'zhul's will.
~ Icecrown and the Frozen Throne - Kil'jaeden cast Ner'zhul's icy cask back into the world of Azeroth, landing in Northrend, burying itself deep within the Icecrown glacier. The frozen crystal came to resemble a throne. Ner'zhul's spirit strengthened and he tested his power against unsuspecting inhabitants of Northrend, including a small human village with which he raised his first undead army.
~ Day of the Dragon - is a novel by Richard A. Knaak which takes place in the Warcraft universe after the Second War. It narrates about the freeing of the Dragonqueen Alexstrasza from the Dragonmaw clan carried out by the Dalaran mage Rhonin and his companions.
~ The Battle of Grim Batol - With the Dragonqueen as his hostage, Nekros built up a secret army within the abandoned - some say cursed - Wildhammer stronghold of Grim Batol. But small group of resistance fighters, led by the human mage Rhonin managed to destroy the Demon Soul and free the Dragonqueen from Nekros' command. The Dragonmaw clan's defeat signaled the end of the Horde, and the end of the orcs' furious bloodlust.
~ Lethargy of the Orcs - Antonidas theorized that the orcs' communal lethargy was not actually a disease, but a consequence of racial withdrawal from the volatile warlock magics that had made them fearsome, bloodlusted warriors.
~ Lord of the Clans - is a novel by Christie Golden telling the story of Warchief Thrall's rise to glory after being raised secretly by the human Blackmoore in his prison fortress Durnholde to become the 'ultimate warrior'.
~ The New Horde - Trall sets out to find the exiled Frostwolf clan, and in doing so discovers his heritage. He learns the art of shamanism and sets out to release the orc slaves from the human's internment camps.
~ War of the Spider - Ner'zhul, the Lich King was finding his efforts to build his army stymied by the Nerubians of Azjol-Nerub. They were immune to both his plague and his telepathic domination. Ner'zhul's endless army however eventually brought the kingdom of Azol-Nerub crashing down on their heads and his was able to raise the spiders as part of his undead army.
~ Kel'Thuzad and the Forming of the Scourge - There were a handful of powerful individuals scattered throughout the world who heard the Lich King's mental summons from Northrend. Most notable of them was the archmage of Dalaran, Kel'Thuzad, who was one of senior members of the Kirin Tor, Dalaran's ruling council. After travelling to Northrend to speak with Ner'zhul, Kel'Thuzad returned to Lordaeron in disguise to build a group of followers known as "The Cult of the Damned". In time the Cult under Kel'Thuzad would harbor plague cauldrons across Lordaeron which would see many of the citizens die and be raised as undead. The would become known as the Scourge.
~ Of Blood and Honor - is a short story by Chris Metzen. The noble Paladin, Tirion Fordring, had always believed the savage Orcs to be vile and corrupt. He had spent his life fighting ceaselessly to protect humanity from their foul treachery. But an unexpected act of honor and compassion sets in motion a chain of events that will challenge Tirion's most fundamental beliefs, and force him to decide once and for all who are the men -- and who are the monsters.
~ The Alliance Splinters - The higher taxes implemented across the Alliance to pay for the rebuilding of Stormwind and to maintain the orc internment camps took it's toll on the fragile Alliance. The high elves of Silvermoon rescinded their allegiance, and Genn Greymane of Gilneas and Stromgarde weren't far behind.
~ Warcraft III: Reign of Chaos - RTS that details the second invasion of the Burning Legion and the origins of the Scourge, along with the fall of Lordaeron and the awakening of the night elves are the plot of the story.
~ The Scourge of Lordaeron - Terenas' only son, Prince Arthas, took up the fight against the Scourge. Arthas succeeded in killing Kel'Thuzad, but unable to stop the Scourge, he tracked the plague's source to Northrend, intending to end its threat forever. Instead, Prince Arthas eventually fell prey to the Lich King's tremendous power. Believing that it would save his people, Arthas took up the cursed runeblade, Frostmourne. But it stole his soul and transformed him into the greatest of the Lich King's death knights. Arthas led the Scourge against his own kingdom. Ultimately, Arthas murdered his own father, King Terenas, and crushed Lordaeron.
~ World of Warcraft: Ashbringer - As the Lich King's plague of undeath ravages Lordaeron, a mighty blade is forged from a dark orb! In the hands of Highlord Alexandros Mograine, the blade will become legend. In time, both blade and man will become... Ashbringer.
~ Sunwell - The Fall of Quel'Thalas - Arthas was haunted by the ghost of Kel'Thuzad. The ghost told Arthas that he needed to be revived for the next phase of the Lich King's plan. To do so, Arthas needed to take his remains to the Sunwell in Quel'Thalas. Arthas's army slaughtered every living elf, and raised the slain Ranger-General Sylvanas Windrunner as a banshee. Arthas achieved his goal, resurrecting Kel'Thuzad as a lich, and tainting the Sunwell forever.
~ Archimonde's Return and the Flight to Kalimdor - Kel'Thuzad stole the 'Spell book of Medivh' from Dalaran and summoned Archimonde. He and his demons were hellbent on destroying the World Tree - Nordrassil on the legendary land of Kalimdor. A mysterious prophet appeared to warn the Horde and Alliance of the dangers - none other than Medivh. Many orc warriors once again succumbed to their bloodlust, and even Thrall's greatest lieutenant Grom Hellscream drank Mannoroth's blood. Cenarius came forth to drive Hellscream and his orcs back, but they managed to kill Cenarius and corrupt the forests of Ashenvale. Ultimately Hellscream returned to Thrall to help defeat Mannoroth, and in doing so ended the orc's blood-curse. Tyrande called the druids out of their thousand year slumber to help, and with the aid of Malfurion found the barrow prison where Illidan was chained. Illidan did aid the Night Elves for a time, but eventually fled to pursue his own interests.
~ The Battle of Mount Hyjal - Unified in purpose, the races of Azeroth worked together to fortify the World Tree. Malfurion succeeded in unleashing Nordrassil's primal fury, utterly destroying Archimonde and severing the Legion's anchor to the Well of Eternity. Destroying the Tree in the process.
~ The Betrayer Ascendant - Legion invades Ashenvale and Illidan is released. He consumes the energies of the artifact known as the Skull of Gul'dan. Kil'jaeden ordered Illidan to destroy Ner'zhul and put an end to the undead Scourge once and for all. Warden Maiev Shadowsong began to hunt him down, but Illidan managed to find the Eye of Sargeras despite her. Malfurion and Tyrande stopped Illidan from destroying the Frozen Throne. Illidan fled to Outland and Maiev followed him.
~ Rise of the Blood Elves - The high elves grieved for the loss of their homeland and decided to call themselves blood elves in honor of their fallen people. With the combined naga and blood elf forces, they managed to defeat Maiev and free Illidan from her grasp.
~ Civil War in the Plaguelands - Sylvanas and her rebel undead (known as the Forsaken) claimed the ruined capital city of Lordaeron as their own. Weakened, but determined to save his master, Arthas reached Northrend only to find Illidan's naga and blood elves waiting for him.
~ The Lich King Triumphant - sing his runeblade, Frostmourne, Arthas shattered the Lich King's icy prison and thereby released Ner'zhul's enchanted helm and breastplate.
Arthas placed the unimaginably powerful helm on his head and became the new Lich King. Ner'zhul and Arthas' spirits fused into a single mighty being, just as Ner'zhul had always planned.
~ Old Hatreds - The Colonization of Kalimdor - Thrall led the orcs to the continent of Kalimdor, where they founded a new homeland with the help of their tauren brethren. Off the eastern coast of Dustwallow Marsh, the Alliace built the rugged port city of Theramore.
~ World of Warcraft begins
* Assault on Blackwing Lair
* Dragons of Nightmare
* The Gates of Ahn'Qiraj are reopened.
* Naxxramas appears over Stratholme
~ World of Warcraft: The Burning Crusade begins
* Blood elves under Kael'thas capture Tempest Keep. The Exodar escapes, ending up on Azeroth. With the power of the Keep's naaru, M'uru, the Blood Knights gain new powers.
* The Dark Portal Opens under the command of Lord Kazzak. His forces are defeated by the Argent Dawn and Alliance and Horde forces. The latter create settlements in Outland.
* A Legion counterattack fails. The Portal is closed.
* Black Temple: Illidan killed at the hands of Akama, Maiev and the Ashtongue Deathsworns.
* Kael'thas and his felblood minions took M'uru to the Sunwell Plateau. Lady Liadrin's Blood Knights joined the Shattered Sun Offensive, along with the Aldor and Scryer factions.
* Fury of the Sunwell: Kael'thas attempted to summon Kil'jaeden, but was defeated.
~ The Scourge begin regular attacks on Stormwind City and Orgrimmar
~ World of Warcraft: Wrath of the Lich King begins
* Fall of the Lich King
* Gnomes retake Gnomeregan's surface
* Trolls retake Echo Isles
* Gilneas civil war
~ http://www.wowpedia.org/War_Against_the_NightmareWar Against the Nightmare - The Nightmare Lord had turned almost all of the Emerald Dream into a nightmare, and though nature's defenders did not stop in their attacks, they seemed to have no effect in stopping the corruption, and sometimes became corrupted themselves. Malfurion Stormrage himself was trapped in the Nightmare, though with the help of some of his friends he was able to escape. On the waking world, and with the help of several druids, Malfurion was eventually able to destroy the Nightmare Lord's power source, both on the Emerald Dream and in Azeroth. With him gone, the nature and dreamform armies were able to rout and defeat the Nightmare, though a small pocket of it remained unconquered.
~ The Shattering: Prelude to Cataclysm - Thrall has discovered that the elementals no longer heed the shaman's call. The link shared with these spirits has grown thin and frayed, as if Azeroth itself were under great duress. The fate of Azeroth's great races is shrouded in a fog of uncertainty, and the erratic behavior of the elemental spirits, troubling though it is, may only be the first ominous warning sign of the cataclysm to come.
~ World of Warcraft: Cataclysm begins
* The Shattering, Deathwing returns to Azeroth
* Invasion of Gilneas
* Second battle of Mount Hyjal
* Island at Vashj'ir appears