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This is a timeline of the history of Sera. The calendar designations are based on the year that Emergence Day occurred, with B.E. (Before Emergence) counting years before that event, and A.E. (After Emergence) counting years after that event.

Early Seran History

~5000 B.E.

• The nation of Pelles develops a voting system that utilized pottery shards around this time.^[1]

~980 B.E.

• The nation of Gorasnaya begins its rise to power around this time.^[2]

~980 - 480 B.E.

• The Silver Era is ongoing. The Kashkur Empire prospers while Gorasnaya continues to expand.
• The fortress of Anvil Gate is built by the Kashkur Empire to guard the Anvegad Pass and defend the empire's southern regions from invaders seeking to plunder its cities and silver mines.^[3]
  • The city of Anvegad is later built around Anvil Gate.

~480 B.E.

• Gorasnaya becomes a formidable empire. At its greatest extent, it encompasses over four hundred million people. Over the following centuries, Gorasnaya gradually declines, and is reduced to twenty million people by the start of the Pendulum Wars.^[4]

~130 B.E.

• The Archipelago War is fought.

~117 B.E.

• The last recorded attempt by an army to fight through the Anvegad Pass occurs.^[5]

~117 - 80 B.E.

• The Era of Silence begins. Humanity abandons warfare and Sera enters a golden age.
• Imulsion is discovered by an oil-exploitation drill.^[6]
  • The Lightmass Process is perfected by Dr. Helen Cooper, allowing Imulsion to be converted into pure energy.^[7]
  • The Gold Rush, a global economic boom fueled by the exploitation of Imulsion, occurs.^[8]
• The Era of Silence ends. The Imulsion industry becomes destabilized by rampant speculation and demand for the substance rapidly outstrips production, resulting in a massive economic collapse.

Pendulum Wars

80 B.E.

• A long-running global conflict begins to sweep the world of Sera as the Coalition of Ordered Governments (COG) and the Union of Independent Republics (UIR) fight over imulsion energy resources. The Pendulum Wars begin. 

47 B.E.

• Bernadette Mataki is born on Galangi.

22 B.E.

• Marcus Fenix and Carlos Santiago are born.

21 B.E.

• Brume
  • Dominic Santiago is born.

17 B.E.

• The King Raven is introduced to the COG Army.
• Resignation of Vasgari president Ilim.
  • Vasgar is occupied by Union of Independent Republics "peace keepers" on the order of Chairman Daniel Vari.
• The Invasion of Kashkur begins.
  • The Siege of Anvil Gate occurs in southern Kashkur.
  • The Battle of Shavad occurs in western Kashkur.
  • The Battle of Ragani occurs in western Kashkur.
• Major Adam Fenix retires from the army and becomes deputy director of weapons research at the Defense Research Agency.
• Two months after the Siege of Anvil Gate ends, Captain Victor Hoffman leads the Raid on Gralia in the Republic of Lauczi.

9 B.E.

• Brume
  • Doctor Elain Fenix discovers the Locust Horde. In an attempt to make contact with them, the Locust kill her. She is declared missing, presumed dead.

7 B.E.

• The Lambent War begins, as Lambent Locust begin to overrun the Hollow.

4 B.E.

• Storm
  • Maria Flores is pregnant with Dominic Santiago's baby.
  • Marcus Fenix joins the army, against his father's wishes, along with Carlos Santiago.
  • Dominic Santiago and Maria Flores marry.
• Unknown
  • Several Raids on the Acastu Imulsion Fields take place.
  • The Battle of Irohma Island takes place.^[9]
• Frost
  • Benedicto Santiago is born.
• Thaw
  • Dominic Santiago joins the COG army.

3 B.E.

• The Sarfuth-Maranday Border Incident takes place.
• Development of the Hammer of Dawn at Aspho Point is discovered by the COG. Planning to capture the technology begins.

2 B.E.

• Brume
  • 14th
    • Sylvia Santiago is born prematurely.
  • 15th
    • The Battle of Aspho Fields takes place. Carlos Santiago, Helena Stroud, and Dan Kennen are killed.^[10]

0 B.E.

• Bloom
  • Unknown
    • Work on the Hammer of Dawn is completed by Professor Adam Fenix.
    • Professor Adam Fenix is given the Octus Medal for his work on the Hammer of Dawn.
  • 32nd
    • COG forces engaged UIR troops in the Independent Republic of Furlin with the Skirmish in Ghato City.
• Reap
  • 6th
    • UIR Third Fleet attack COG forces in Bonbourg, the Hammer of Dawn is used for the first time.
  • 11th
    • Premier Yori Deschenko of the UIR enteres the UIR-COG Armistice with Chairman Tomas Dalyell of the COG.
    • The Skirmish on Furlin Cliffside, one of the last battles of the Pendulum Wars, begins and ends during the armistice.
    • The Pendulum Wars end, with the Coalition of Ordered Governments victorious.
    • Republic of Gorasnaya refused to surrendered to the COG and continued a guerrilla war against the COG.
  • 14th
    • In order to prevent the munity at OZP-11 from launching the UIR's Hammer of Dawn satellites, the COG launches a Lightmass Missile from Azura's Hammer of Dawn Research Facility to destroy the Cosmonaut Training Facility. Major Garron Paduk is badly burned in the blast and the munity ends.

Locust War

0 A.E.

• Bounty
  • Six weeks after the end of the Pendulum Wars, the Locust Horde emerge and slaughter a quarter of the human population in the first 26 hours, known as Emergence Day
  • The Locust War begins.
  • Three days after Emergence Day, Thrashball star Augustus Cole joins the Coalition of Ordered Governments Army to fight the Locust. The announcement causes a monumental spike in recruitment.
• Harvest
  • Battle of Kinnerlake, fresh recruits of the 4th Ephyra Light Infantry sent into Kinnerlake for a holding action at the mall district.
• Thaw
  • The Destruction of Halvo Bay begins.
  • Kilo Squad, led by Lieutenant Damon Baird, launch an unauthorized Lightmass Missile strike in order to destroy downtown Halvo Bay to keep it from being used by the Locust.
  • The actions of Kilo Squad result in the Trial of Kilo Squad, punishable by execution, but are cleared of all charges after killing Locust General, Zamil Karn.
  • Remaining Locust forces abandon Halvo Bay. COG Engineering Corps reclaim the city and began searching for human remains.

1 A.E.

• Gale
  • The Battle of Kaia occurs. The 5th Kaian Grenadiers are wiped out, but the civilian population was evacuated off the island. Galangi island is cutoff from the rest of Sera.
• Rise
  • Chairman Tomas Dalyell dies from cardiac arrest. Deputy Chairman Richard Prescott is elected Chairman by the House of Sovereigns.
• Bloom
  • The Battle of Bonbourg is broadcast on COG media outlets showing civilians being massacred by the Locust Horde.
  • 30th
    • The Ostri Republic ultimately falls to the Locust Horde.
    • The Second Battle of Jannermont occurs. Corporal Tai Kaliso uses a chainsaw to cut through a Locust, leading to the invention of the Chainsaw Bayonet by Professor Adam Fenix.
    • Andius is destroyed by the Locust, leading to miles long traffic jam for COG military units and refugees.
    • Premier Yori Deschenko refused to send aid to Tyrus.
    • COG enacts the Fortification Act and retreats to the Jacinto Plateau.
    • Chairman Prescott announces the Hammer of Dawn Strikes in three days and ordered all units and civilians to retreat to Jacinto Plateau.
  • 31st
    • Ambush on Voslov Bridge during the retreat to Jacinto, the Locust Horde ambushed an armored convoy of Gear troops and wiped them out. Sergeant Marcus Fenix and his squad were able to retake the bridge and clear the way for civilian and military traffic at the loss of using the waterway for boats.
    • Thousands of Gears and civilians make it to Jacinto and overcrowding becomes a problem.
  • 33rd
    • The Assassination of Ukkon begins.
    • Mission to CIC Aldair begins.
    • Three days after the announcement of the retreat to Jacinto, the COG begins using the "scorched earth" tactic on Sera to deny the Locust all valuable military assets. The Hammer of Dawn and chemical weapons destroyed 90% of Sera and leads to widespread environment damage and kills millions of civilians and soldiers along with any Locust outside the Hollow.
    • The Rescue of Echo-Five begins.
  • 34th
    • The Assault on Industrial District begins.
  • 35th
    • The Mission to Claybourne begins.
• Reap
  • • Alpha Squad relocates to Vasgar to train the Stranded.
    • Dr. Torres and his daughter, Reyna, discover an abandoned UIR laboratory in Zenic, Vasgar to reside.
    • Rescue of Alpha-Two begins.
    • Mission to Nedroma Health Institute begins.
    • Battle of Imtik Imulsion Rig begins.
    • Mission to Winlock Outpost begins.
    • Chairman Richard Prescott attempts to kill Alpha Squad with a HoD strike due to their gained knowledge of the New Hope Research Facility.
    • Alpha Squad becomes a Stranded militia group that continues with the mission to kill Ukkon.
    • Mission to the Badlands begins.
    • While Reyna is out looking for supplies, Ukkon invades the lab and captures Dr. Torres. Reyna returns and is captured as well. She then witnesses Ukkon murder her father, but is then kept alive by Ukkon due to being the daughter of Queen Myrrah.
    • Mission to Zenic Province begins.
    • Battle of Ukkon's Laboratory begins. Ukkon unleashes his Hydra, but is defeated by Alpha Squad. Ukkon is weakened by a Cytostatic Gas Grenade by Mikayla Dorn and shot in the face by Reyna Torres.
• Thaw
  • Battle of Oblivion, Stranded successfully defended their camp from the Locust Horde.
  • The Skirmish in the Live Zone occurs 190 days after the Hammer of Dawn. Kilo Squad defeated small group of Drones and Boomers.
  • Chief of the COG Defense Staff General Bardry Salaman commits suicide. Colonel Victor Hoffman of the 26th Royal Tyran Infantry replaces him.

5 A.E.

• Sorrow
  • The Fall of Landown takes place during the "Winter of Sorrow".

 9 A.E

• The Evacuation of Illima City takes place.

10 A.E.

• Frost
  • The Fall of Ephyra occurs.
  • During the battle, Sergeant Marcus Fenix deserts his post in an attempt to save his father, Professor Adam Fenix. He fails, and is sentenced to 40 years in prison at the Jacinto Maximum Security Prison.
  • The abandonment results in Ephyra being taken by the Locust - forcing the COG to retreat back to Jacinto City.

14 A.E.

• Storm
  • Operation: Midnight occurs at the Ferro Bridge.
• Gale
  • 11th
    • All criminals at Jacinto Maximum Security Prison are levied into the military, except for Marcus Fenix.
    • Dominic Santiago breaks Marcus Fenix out of prison so he can fight.
    • The Lightmass Offensive begins.
  • 12th
    • The Lightmass Offensive ends.
    • Outer Hollow is destroyed.
    • Locust High General, Uzil RAAM, is killed.
  • The Locust counterattack begins.
  • The Evacuation of North Gate takes place.
  • The Mission to Tollen take place. Tollen sinks.
• Heat
  • The Mission to the Pirnah Badlands takes place, two months after Lightmass Offensive.^[11]
  • The Mission to Montevado takes place, one week after the Mission to the Pirnah Badlands. Montevado sinks.
• Bloom
  • The Liberation of Jilane occurs.
• Harvest
  • The Siege of Jacinto begins.
• Frost
  • 1st
    • Operation: Hollow Storm begins, the largest human military mobilization since the Pendulum Wars.
    • The Assault on Landown take place.
    • Ilima is sunk by the Riftworm, and a battle takes place in the sinkhole.
    • The New Hope Research Facility is declassified and searched for information on the location of the Locust stronghold.
  • 2nd
    • The Locust capital, Nexus, is located using intel pointing to Mount Kadar.
    • The Siege of Nexus begins for the Humans.
    • Discovery of the Lambent War by the COG.
    • Locust High Priest, Ketor Skorge, is killed.
    • Jacinto City is sunk deliberately by the COG in order to flood the Inner Hollow and drown the Locust Horde.
    • The COG evacuates all citizens and Gears and head for the "icy wildness" of Port Farrall.^[12]
• Thaw
  • The COG relocates to Vectes Naval Base, on the island of Vectes. Chairman Richard Prescott intends to make Vectes into "New Jacinto".

15 A.E.

• Storm
  • The Stranded Insurgency on Vectes reaches a boiling point as COG forces push them out.
  • The Lambent surface and attack the Vectes settlement.
  • Chairman Richard Prescott inexplicably abandons Vectes and the COG.
• Bloom
  • The Coalition of Ordered Governments is disbanded due to Chairman Prescott's abandonment.
  • Seran civilization reverts groups of survivalists, with civilians and Gears alike fending for themselves.

17 A.E.

• Bloom
  • The CNV Sovereign is destroyed by the Lambent. Captain Quentin Michaelson and Chairman Richard Prescott are killed in the attack.
  • Queen Myrrah is killed and Adam Fenix successfully detonates his weapon, killing the Lambent and himself. His devices also forces the Locust in evolution and are cocooned in crystal shells.

Interwar Period

17 A.E.

• Bloom
  • The Coalition of Ordered Governments is reformed.
  • Construction of New Ephyra begins.

18 A.E.

• Storm
  • COG forces dump the remains of the Locust into mass graves across Sera.

20 A.E.

• First Minister Anya Stroud is the first person to enlist in Minister Mina Jinn's fertility program. She is successful in implanting a child.
• James Dominic Fenix is born.
• Delmont Walker is born.
• Kait Diaz is born.
• Fahz Chutani is born.

22 A.E.

• Bloom
  • Settlement 2 is completed and accepts new citizens.

27 A.E.

• First Minister Anya Stroud attempts to have another child and enlists in Minister Mina Jinn's fertility program for a second time. She dies during the process, however, and Dyer is elected as new First Minister.

30 A.E.

• Gabriel Diaz perishes from Rustlung. His wife, Reyna Diaz, replaces him as leader of Fort Umson.

38 A.E.

• James Dominic Fenix and Delmont Walker graduate from boarding school and enlist in the Coalition of Ordered Governments Military Academy, against the wishes of James Dominic Fenix's father, Marcus Fenix.
• At the Coalition of Ordered Governments Military Academy, James Dominic Fenix and Delmont Walker meet Fahz Chutani and develop a rival relationship, with Fahz Chutani aiming to be the best. All three are trained by Chief Sergeant Clayton Carmine, who often spoke of his brothers - including the late Private Benjamin Carmine to inspire his troops.

39 A.E.

• James Dominic Fenix, Delmont Walker, and Fahz Chutani graduate from the New Ephyra Military Academy and all three are made Lieutenant.

41 A.E.

• Thaw
  • Lieutenant Fenix, Lieutenant Walker, and Lieutenant Chutani clash with civilian protestors in Settlement 2, protesting the authoritarian rule of New Ephyra. After one civilian broke Lt. Chutani's nose, and another threw an incendiary grenade, First Minister Jinn ordered Lieutenant Fenix to use lethal force. Lieutenant Fenix then commanded the DeeBee Shepherds to open fire on the civilians.
  • The Settlement 2 Protest Massacre causes a rift between civilians and the COG, though compliance from Settlement 2 increases. The massacre creates a bigger rift between the COG and Outsiders. A group called The White Xiphium forms to fight the oppression of the COG.
  • Lt. Walker, disturbed by the events he was a part of, wishes to quit the COG. Lt. Fenix asks his father, Marcus Fenix, what to do. Marcus tells them not to go Outsider, as the COG would hunt them down. Lt. Fenix then disagreed and went with Lt. Walker to quit the COG and become Outsiders. Leaving their armor at the Stroud Estate, James Dominic Fenix and Delmont Walker met Kait Diaz and joined her village at Fort Umson.

Swarm Invasion

42 A.E.

• Bloom
• Frost

Notes

• A note on dates: No specific years are named in Gears of War. All dates are numbered as so many years before or after Emergence Day, B.E. and A.E. respectively. In addition, little is so far known about the Seran Calendar. As a result, the events recorded in the timeline are not given a specific date, only placed within a year. Events that take place in the same year should be listed in chronological order; however this is not always possible because of lack of references, and so the events may not always be in the right sequence.

References

External links

• Official Gears of War timeline (Gearspedia File)
• IGN article on Destroyed Beauty
• Game Informer "Fall of Man: An Intro To The Gears Universe" timeline