The After Colony timeline, or AC for short, deals with the events of Mobile Suit Gundam Wing and its follow-up Mobile Suit Gundam Wing: Endless Waltz. This series is set in an universe in which the Gundams are the primary arm of the space colony's resistance, rather than a small part of a larger army formed for resistance. The After Colony timeline ends sometime before the present-day events of Frozen Teardrop, and is continued in the Mars Century or MC era during which that novel takes place.
- New Mobile Report Gundam Wing, forty-nine episodes.
- Mobile Suit Gundam Wing: Endless Waltz , three OVA episodes.
The following timeline of AC history attempts to synthesize the various official and semi-official Gundam Wing histories. It combines previously-published historical info, capsule summaries of the Endless Waltz and Episode Zero derived flashbacks. 
- AC 001
Several nations establish permanent space stations in Earth orbit. This is the first year of the After Colony (AC) calendar.
- AC 020
The colony A02026 is constructed at Lagrange point 5. This colony will later become the home of the fierce and mighty Long clan when they are exiled from Earth by their fearful government. [Endless Waltz novelization, Episode Zero]
- AC 022
Space colony construction begins at Lagrange point 1. Due to unexpectedly severe conditions and strange new diseases, construction is greatly delayed.
- AC 050
Nations begin withdrawing from space, until the countries of the Middle East - leaving the oil industry and looking for a new enterprise to invest in - join the colony project. Colony construction begins at the other Lagrange points.
- AC 070
Due to scarce resources and limited supplies from Earth, disputes break out at each Lagrange point. The Middle Eastern nations intercede and negotiate an end to the conflicts.
- AC 087
The colony V08744 is constructed at Lagrange point 2. [Endless Waltz novelization, Episode Zero]
- AC 102
An Island 2 type colony is completed at Lagrange point 1 (L-1). With this success achieved, the colony project goes on to construct population centers composed of multiple colonies, popularly known as "colony clusters."
On Earth, international disputes continue to escalate. Civilians flee the conflict by emigrating to the colonies, and soon 15% of the human population is living in space.
- AC 130
With Earth's territorial lines redrawn, the conflicts die down. In spring of that year, twin princesses Katrina and Sabrina Peacecraft of Sanc Kingdom are born. [Frozen Teardrop]
- AC 133
In the process of negotiating a lasting peace between the warring nations, the "United Earth Sphere Alliance" is established. In order to keep the peace - and deal with nations that oppose the new world government - the Alliance Forces are formed. One of the Alliance's key financial supporters is the military-industrial combine called the Romefeller Foundation.
- AC 140
One by one, Earth's nations join the Alliance. As their mother countries join, the colonies are also enrolled, willing or not. The colonies are critical of the Alliance and its intentions, and the Alliance decides to respond with force in order to silence its critics.
- AC 145
The 19 year old Heero Yuy becomes the personal tutor of 15 year old Katrina Peacecraft. [Frozen Teardrop]
- AC 147
In the name of peace and justice, the Alliance invokes the authority of its member nations to forcibly seize control of the colonies.
- AC 149
The Alliance assembly transfers control of the previously-independent colonies to the mother countries that originally constructed and settled them. These nations then kindle a new colony emigration boom.
- AC 150
The colonists, favoring autonomy, become increasingly dissatisfied with Alliance control.
- AC 165
In order to peacefully oppose the Alliance, the citizens of the colonies elect Heero Yuy as their representative. His charismatic leadership strengthens solidarity between the colonies.
- AC 170
Colony leader Heero Yuy's policies of demilitarization and non-violence are well-received by many of Earth's nations.
- AC 173
OZ, a subsidiary of the Romefeller Foundation, begins development of humanoid weapons known as "mobile suits."
- AC 174
Colony leader Heero Yuy makes a goodwill tour of Earth's nations, laying the groundwork for colonial independence.
- AC 175
Scientists Doctor J, Professor G, Doktor S, Instructor H, Master 0 and Howard complete the first combat-ready mobile suit. This prototype Leo is also known as the Tallgeese.
- AC 175, April 7
colony leader Heero Yuy is assassinated by an unknown gunman. The leaderless colonies are thrown into chaos, and the Alliance plans a second military intervention. In reaction to the assassination, the Tallgeese developers quit the mobile suit project and disappear.
The Romefeller Foundation's OZ subsidiary becomes a secret society.
- AC 176
The Romefeller Foundation's OZ subsidiary begins production of a scaled-down version of the mobile suit Leo. [Encyclopedia of Gundam Wing]
The Alliance forms its first mobile suit force, the Special Mobile Suit corps or "Specials." The Specials, made up of Romefeller Foundation employees, are essentially a front for the secret society OZ.
Under the pretext of suppressing the chaos in the colonies, the Alliance again sends in the military. Mobile suits are first used in combat. All colonies are placed under military supervision, and communication between colonies is prohibited to prevent future collaboration.
- AC 180
Doctor J, Professor G, Doktor S, Instructor H and Master 0 design the Wing Gundam Zero. OZ discovers their whereabouts, and they are forced to end their collaboration, split up and go underground.
OZ begins development of the "Zodiac" series of mobile suits, which eventually includes the Tragos, Aries, Pisces and Cancer. [Encyclopedia of Gundam Wing]
Quatre Raberba Winner is born. [Endless Waltz novelization, Episode Zero]
- AC 182
The Alliance decides to stage a military intervention in the Sanc Kingdom, an advocate of Heero Yuy-style total pacifism. The capital falls in one day. King Peacecraft is killed; Princess Relena is rescued and adopted by his trusted aide Darlian, while Prince Milliardo's whereabouts are unknown.
Conflict breaks out in Eastern Europe. The Bloom family's wagon is caught in the crossfire between Alliance forces and rebels; Katherine Bloom (age 4) survives, but her parents and her baby brother Triton (age 2) are believed to be killed. Katherine is taken in by her parents' circus troupe. [Endless Waltz novelization, Episode Zero]
- AC 187
A virus breaks out at L2's V08744 colony. An antidote is developed, but is not provided to the poorer and less desirable colonists. [Endless Waltz novelization]
- AC 188
Revolts break out in many colonies, and are ruthlessly crushed by the Alliance.
At L3's X18999 colony, which is still a year from completion, Quinze leads an uprising. He and his followers steal eight Alliance mobile suits and attack Alliance military installations. Brigadier General Septem, the ranking Alliance officer at the colony, permits Specials officer Treize Khushrenada and three of his cadets, including 12-year-old Lucrezia Noin, to join the battle.
Assassin Odin Lowe and his young ward have arrived at X18999. Adin's last assignment is to eliminate Septem. [Endless Waltz novelization, Episode Zero]
Another uprising takes place at L2's V08744. Rebels seize the Maxwell Church. 245 people are killed in the "Maxwell Church Massacre,". [Endless Waltz novelization, Episode Zero]
At A0206, Master O, Chang Wufei's tutor, disappears from the Chang family's house. Dekim Barton commissions him, and his four fellow scientists, to develop an advanced mobile suit - a Gundam - for the resistance scheme known as "Operation Meteor." [Endless Waltz novelization]
- AC 189
L3's X18999 colony is completed. Mariemeia Barton is born here; her mother is Leia Barton, and her father's identity is unknown.
Zechs Merquise and Lucrezia Neun graduate from the Specials' Lake Victoria academy, with the highest and the second highest marks in the academy's history, respectively. [Endless Waltz novelization]
- AC 190
On Earth, a nameless ten-year-old boy fights against the Alliance as part a team of mercenary mobile suit pilots. His team is wiped out in a failed ambush, its location betrayed by an Alliance spy. The spy is revealed to be a girl named Middie Une. [Episode Zero]
- AC 191
At X18999, Leia Barton dies of an illness.
- AC 191, April 8
Terrorists steal prototype Aries mobile suits from the Alliance's JAP point base. General Catalonia, commander of the Specials (and leader of the secret society OZ), dispatches Treize (age 19) and Zechs (age 15) to quash the rebellion. A terrorist captures eleven-year-old Relena Darlian, daughter of the Alliance's vice-minister for foreign affairs, and holds her hostage; she is rescued by Zechs. [Endless Waltz novelization, Episode Zero]
- AC 192
Howard and Professor G, both members of the salvage organization known as the Sweeper Group, complete the huge space ship Peacemillion and hide it on the lunar surface. Howard then goes to Earth to work aboard a salvage ship, while Professor G and his Sweeper cohorts remain in space.
On the return trip, the Sweepers discover a stowaway and bring him before Professor G. The stowaway gives his name as "Duo Maxwell." [Endless Waltz novelization, Episode Zero]
- AC 193
Treize Khushrenada becomes leader of the secret society OZ, and commander of the Specials.
A shuttle carrying Quatre Raberba Winner is hijacked by a gang of renegades known as the Maganac Corps. He saves Maganac leader Rasid from a traitor and fights off Alliance forces to guard their escape, winning the Maganac Corps' eternal respect and gratitude. The Maganac Corps escort the rescued workers to Earth, while Quatre brings Instructor H back home with him. [Endless Waltz novelization, Episode Zero ]
- AC 194
Specials ace Zechs Merquise receives the first two-rank promotion in the organization's history, and acquires the nickname "Lightning Baron."
Doctor J has given his ward, the boy later code-named Heero Yuy, an extensive course of training to prepare him for Operation Meteor. [Endless Waltz, Endless Waltz novelization]
The Alliance condemns the aging colony A0206. Rather than attempt to resettle its inhabitants, the fierce Long clan, General Septem orders that they be wiped out with biological weapons. The Specials' attack is repulsed, and the Alliance's biological weapons are destroyed. Alliance officer Sally Po reports that the mission was successful, ensuring that A0206 will be left alone in future. [Endless Waltz novelization, Episode Zero]
- AC 195
At each colony cluster, anti-Alliance rebels prepare for Operation Meteor. Planned by Dekim Barton and coordinated by Quinze, the plan involves dropping a space colony on Earth to create a climatic catastrophe and global chaos. Then five super-advanced mobile suits, the Gundams, will be sent to Earth to seize control of the planet. The space colonists will thus become the rulers of the human race.
At the L3 colony cluster, designated Gundam Heavy Arms pilot Trowa Barton realizes that Doktor S and his aides are trying to subvert his father's plan. When he threatens to rat them out to Dekim, he is shot and killed. A nameless mercenary, one of the mechanics working on the Heavy Arms, volunteers to take Trowa's place and assume his name. [Endless Waltz, Endless Waltz novelization, Episode Zero]
Aboard a Sweeper Group ship, Duo Maxwell attempts to blow up the Gundam Deathscythe and thus derail the operation, but finds that Professor G has defused his bombs. Professor G urges Duo to steal the Deathscythe, telling him to go to Earth and there join forces with Howard. [Endless Waltz, Endless Waltz novelization]
At the L4 colony cluster, Quatre Raberba Winner and Instructor H have completed the construction of the Gundam Sandrock. As the final instructions for Operation Meteor arrive, Instructor H smashes the display and tells Quatre to do as his own conscience dictates. [Endless Waltz, Endless Waltz novelization]
At L5's A0206 colony, Chang Wufei likewise rebels. Realizing that Ron Shirin plans to drop the ramshackle colony as part of the operation, and disapproving of the planned mass destruction, he takes off for Earth with the Shenlong Gundam to fight for justice. [Endless Waltz, Endless Waltz novelization]
- AC 195 , April 7
"Operation Meteor" begins - apparently ahead of schedule. Five Gundams descend to Earth and begin attacking Alliance military bases and factories. Their goal is to cripple the secret society OZ.
- AC 195 , May 19
the Gundams attack an Alliance meeting at the New Edwards base. The Alliance's military leaders, who had that very day decided to begin disarmament and make peace with the colonies, are killed. OZ then discards its Specials cover and launches "Operation Daybreak", overwhelming the Alliance's terrestrial forces and seizing control of Earth.
- AC 195 , September
Treize resigns as leader of OZ under pressure from the Romefeller Foundation. OZ splits into Romefeller and Treize factions. The Foundation launches "Operation Nova," dropping mass quantities of mobile dolls to Earth to eliminate the Treize faction and any other resistance.
- AC 195 , December 24
the Eve Wars begin. White Fang (a movement fighting for the independence of the space colonies, led by Quinze and the erstwhile Zechs Merquise) and the World Nation (the Romefeller Foundation's world government, now led by Treize Khushrenada) begin a massive space battle. Treize is killed in battle, and the World Nation surrenders. White Fang's last gambit, an attempt to drop the space fortress Libra on Earth, is foiled and Zechs disapears. Representatives of the space colonies make peace with the World Nation, and the Earth Sphere Unified Nation is established.
- Endless Waltz novelization
|After Colony / Mars Century|
|Anime||Gundam Wing | Endless Waltz | Comprehensive Episode Listing|
|Events||Operation Meteor | Eve Wars | Operation Mythos|
|Topics||Characters | Locations | Mobile Suits | Nations and Factions | Technology | Warships and Spacecraft|
|Books||Gundam Wing Manga | Gundam Wing Novel | Endless Waltz Manga | Endless Waltz Novel | A Scythe In My Right Hand, You In My Left | Battlefield of Pacifists | Blind Target | Episode Zero | Frozen Teardrop | G-Unit (The Last Outpost) | Ground Zero | Perfect Album Bom-Bom Comic | Technical Guide | The Glory of Losers | Tiel's Impulse|
|Media||Gundam Wing: Complete Remastered Edition|
|Timelines||Advanced Generation | After Colony | After War | Anno Domini | Correct Century | Cosmic Era | Future Century | Mars Century | SD Gundam | Universal Century|