User:NightHammer/Sandbox2

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January

 * January 1
 * The colony ship Odyssey is launched from the Sol system to colonize Reach in 2362.


 * January 2
 * A battle takes place at the Theta Ursae Majoris system between the UNSC and Insurrectionists in 2504.
 * Avery Johnson, Nolan Byrne, Ponder, and Healy begin training the Harvest militia in 2525.


 * January 3
 * Gage Yevgenny, a Orbital Drop Shock Trooper, is born on Harvest in 2506.
 * Forerunner artifacts are discovered on Onyx and all data pertaining to the planet is classified in 2511.
 * Gage Yevgenny enlists in the Colonial Military Administration in 2524.
 * The United Rebel Front launches a rebellion on Draco III in 2554.


 * January 7
 * Serina is created and assigned to in 2530.


 * January 8
 * Operation: FIRESIDE occurs, in which Orbital Drop Shock Troopers fight off Covenant attackers on Ariel, in 2552.
 * Ruth Charet is elected President of the Unified Earth Government in 2553.


 * January 9
 * James Cutter is transferred to in 2514.


 * January 10
 * Draco III is attacked and invaded by the Covenant in 2545.


 * January 12
 * Supersoldiers of the Orion Project complete their first operation with only one causality in 2496.


 * January 14
 * Construction of the Quito Space Tether is completed on Earth in 2313.


 * January 16
 * The Deep Space Research Array is opened in orbit over Arcadia in 2498.
 * Harvest residents celebrate the Solstice Celebration in Utgard in 2525.


 * January 17
 * A skirmish over Harvest occurs when Covenant Kig-Yar encounter Avery Johnson and Nolan Byrne in 2525.
 * The Minister of Fortitude and the Vice Minister of Tranquility learn of the presence of Forerunner artifacts on Harvest in 2525.
 * Smart AI Iona is created on Earth in 2551.
 * Iona is placed into stasis to prevent her rampancy in 2558.


 * January 18
 * A telescope orbiting Mars inadvertently captures the first human photograph of High Charity in 2524.
 * After the first conflict with the Covenant, travels to Reach to request assistance for Harvest in 2525.
 * Catherine Halsey learns that the Spartan-II augmentations are being studied on Algolis, Meridian, and Ariel for a secret program in 2532.


 * January 19
 * Avery Johnson accelerates the Harvest militia's training to prepare them for the Covenant in 2525.


 * January 20
 * Tobias Fleming Shaw, co-creator of the Shaw-Fujikawa Translight Engine, is born in 2220.
 * Olympia Vale, a Spartan-IV, is born on Luyten in 2536.


 * January 28
 * Lucy-B091, a Spartan-III, is born in 2533.


 * January 29
 * The Orion Project is re-initiated in 2491.


 * January 30
 * James Cutter turns down a command position on cruiser in 2528.
 * Catherine-B320, a Spartan-III, is born on New Harmony in 2530.
 * Ellen Anders is recruited by the Office of Naval Intelligence.

February

 * February 1
 * Henry Glassman, an astrophysicist, is born on New Carthage in 2522.


 * February 3
 * Harvest's Tiara station makes long-range radar contact with the Covenant cruiser Rapid Conversion in 2525.
 * The preparations are made for the SPARTAN-II program's augmentations in 2525.


 * February 4
 * arrives at Harvest to assist the Third Fleet in its campaign against the Covenant in 2531.
 * The United Nations Space Command is victorious in defeating the Covenant in the Harvest campaign in 2531.


 * February 7
 * Indrid Lota is born on Aleria in 2530.
 * A funeral service is held for the crew of the destroyed aboard  in 2531.


 * February 8
 * Jacob Keyes, captain of, is born on Earth in 2495.


 * February 9
 * Covenant cruiser Rapid Conversion arrives at Harvest in 2525.
 * J.D., an Orbital Drop Shock Trooper nicknamed the Rookie, is born on Luna in 2525.
 * The Battle of Arcadia occurs, which results in a UNSC victory in 2531.
 * The Battle of Jericho VII begins in 2535.


 * February 10
 * The capture of Ellen Anders forces to follow a Covenant fleet to a shield world in 2531.
 * UNSC Spirit of Fire is designated as "lost with all hands" in 2534.


 * February 11
 * First formal contact between humanity and the Covenant on Harvest leads to conflict in 2525.
 * The Human-Covenant War begins in 2525.
 * Catherine Halsey determines that Cortana may be able to overcome a smart AI's seven-year lifespan in 2550.


 * February 12
 * The Battle of Jericho VII ends, resulting in the Covenant glassing the planet, in 2535.


 * February 13
 * Bliss is glassed by the Covenant in 2526.
 * The Battle of XI Boötis A takes place, resulting in a UNSC victory in 2528.


 * February 15
 * Catherine Halsey delineates the fundamentals of the SPARTAN-II program in 2511.


 * February 16
 * Jerald Mulkey Ander, the future leader of the Secessionist Union, is born on Harvest in 2461.


 * February 18
 * Wallace Fujikawa, the co-creator of the Shaw-Fujikawa Translight Engine, passes away in 2318.


 * February 19
 * Onyx's ecology and geology are extensively studied by the UNSC Engineering Corps in 2492.
 * The Spartan-IIIs of Gamma Company undergo their augmentations in 2551.


 * February 22
 * Covenant cruiser Rapid Conversion destroys the town of Gladsheim on Harvest in 2525.


 * February 23
 * A terrorist attack caused by the Freedom and Liberation Party occurs in the Haven arcology, on Mamore, in 2511.
 * Harvest is evacuated by humanity, leaving the planet to the Covenant, in 2525.
 * The Battle of Shield World 0459 begins in 2531.


 * February 25
 * The Battle of Shield World 0459 ends in a UNSC victory after the destruction of the shield world in 2531.


 * February 26
 * The crew of burn Flood-infected bodies rather than study them in 2531.


 * February 27
 * Edward Buck is transferred into the Orbital Drop Shock Troopers by UNSC High Command in 2545.


 * February 28
 * Jun-A266, Spartan-III, a is born on New Harmony in 2524.
 * Miranda Keyes, commander of, is born on Reach in 2525.

March

 * March 1
 * The Battle of Harvest occurs, resulting in a Pyrrhic UNSC victory in 2526.
 * 's crew, without a functional slipspace engine, enter cryo-sleep in 2531.


 * March 2
 * The Callisto Incident occurs, effectively beginning the Insurrection in 2494.


 * March 5
 * Jul 'Mdama, leader of a Covenant remnant faction, is born on Sanghelios in 2489.
 * Jorge-052, a Spartan-II, is born on Reach in 2511.


 * March 6
 * The Office of Naval Intelligence's Onyx budget is limited due to lack of success in 2525.
 * The Battle of 18 Scorpii occurs, during which Insurrectionists help secure a UNSC victory, in 2543.


 * March 7
 * John-117, a Spartan-II, is born on Eridanus II in 2511.


 * March 8
 * Luther Mann and Henry Lamb discover the Halo Array's firing sequence is active in 2555.


 * March 9
 * The Quito Space Tether is officially named in 2401.
 * The Spartan-IIs receive augmentations, with only thirty-three Spartans successfully recovering, in 2525.
 * Preston Cole requests a series of requisitions, transfers, and favors from Reach Central Command in 2543.


 * March 10
 * The WINTER CONTINGENCY protocol is enacted by the UNSC in 2526.


 * March 11
 * Emile-239, a Spartan-III, is born on Eridanus II in 2523.


 * March 12
 * Kojo "Romeo" Agu enlists in the UNSC Marine Corps, at the minimum age of sixteen, in 2541.


 * March 13
 * Operation: KALEIDOSCOPE takes place on Harvest, resulting in the assassination of Jerald Mulkey Ander, in 2502.


 * March 15
 * Ord Casto, the future High Prophet of Truth, is born on High Charity in 2396.
 * Jameson Locke, Office of Naval Intelligence agent and Spartan-IV, is born on Jericho VII in 2529.


 * March 17
 * Operation: FAR STORM, a joint Swords of Sanghelios–UNSC operation, begins in 2555.


 * March 19
 * Catherine Halsey, creator of the SPARTAN-II program, is born on Endymion in 2492.
 * Linda-058, a Spartan-II, is born on Verent in 2511.


 * March 20
 * Benjamín Nùñez, an Orbital Drop Shock Trooper, is born on Mars in 2527.
 * Operation: FAR STORM ends after the firing of the Halo Array is averted in 2555.


 * March 21
 * Franklin Mendez, trainer of the Spartan-IIs and Spartan-IIIs, is born on Sigma Octanus IV in 2492.


 * March 23
 * Rho 'Barutamee, Supreme Commander of the Fleet of Valiant Prudence, is born on Sanghelios in 2479.
 * Insurrectionists bomb a spaceport in Troisi City on Lodestone in 2526.


 * March 30
 * A funeral service is held for deceased Spartan-IIs aboard in the Lambda Serpentis system in 2525.

April

 * April 1
 * Catherine Halsey has the bodies of deceased Spartan-IIs cryogenically preserved in 2525.


 * April 2
 * The UNSC and ONI prevent a terrorist attack on New Harmony Spaceport on Mars in 2526.


 * April 3
 * Frederic-104, a Spartan-II, is born on Ballast in 2511.


 * April 5
 * Miranda Keyes is awarded the Silver Star and promoted from Lieutenant to Lieutenant Commander on Reach in 2550.


 * April 13
 * The Orion Project is initiated by the Office of Naval Intelligence in 2321.
 * Sarah Palmer, commander of the Spartan-IVs aboard, is born on Luna in 2527.


 * April 18
 * The Battle of Psi Serpentis occurs, resulting in a UNSC victory and Preston Cole's apparent death, in 2543.


 * April 20
 * Wallace Fujikawa, co-creator of the Shaw-Fujikawa Translight Engine, is born in 2215.
 * arrives in the Epsilon Indi system to investigate the reason for contact loss with Harvest in 2525.


 * April 21
 * Douglas-042, a Spartan-II, is born on Asphodel in 2511.
 * arrives at Harvest and is destroyed by Rapid Conversion in 2525.


 * April 22
 * John-117 kills three Orbital Drop Shock Troopers after a fight broke out aboard in 2525.
 * The Battle of Fumirole takes place in 2552.


 * April 26
 * The Battle of Circinius IV takes place, resulting in the planet's glassing in 2526.


 * April 28
 * Vice Admiral Michael Stanforth orders ONI scientists at CASTLE Base to refocus their studies on strategies to defeat the Covenant in 2526.

May

 * May 1
 * Blue Team raids the United Rebel Front's Camp New Hope on Victoria, resulting in General Howard Graves' death in 2531.


 * May 3
 * Catherine Halsey researches ways to increase the lifespan of a smart AI in 2526.


 * May 4
 * Petra Janecek, a war journalist, is born in Serif on Lenapi in 2511.


 * May 6
 * Onyx is recommended for colonization by the UNSC Engineering Corps in 2491.


 * May 7
 * Argent Moon is commissioned by the Office of Naval Intelligence in 2553.


 * May 8
 * Jerome-092, a Spartan-II, is born on Minister in 2511.
 * Catherine Halsey undergoes the Hemley & Aubourn Behavior Analysis, with results reporting her unreliability, in 2551.


 * May 10
 * During the Battle of Actium, Colonel Akono Menteith rallies the men and women of the 53rd Armored Division in 2545.
 * SPARTAN-B312 takes part in a counter-insurgency operation on Mamore in 2552.


 * May 11
 * Preston Cole's liver fails from cirrhosis and is subsequently replaced in 2525.


 * May 14
 * Sandra Tillson, an xenoarchaeologist, is born on Coral in 2506.


 * May 16
 * Caleb-095, a Spartan-II, is born on Luyten in 2511.


 * May 21
 * Section Two of the Office of Naval Intelligence officially unveils the SPARTAN-II program to the public in 2547.


 * May 22
 * James Cutter receives a Bronze Star for his actions aboard in 2524.


 * May 28
 * Andrew Del Rio, former captain of and senator, is born on Earth on 2500.


 * May 29
 * John Forge, a veteran UNSC Marine Corps sergeant, is born on Earth in 2501.


 * May 30
 * Some members of SPARTAN-III Beta Company are reassigned to non-combat roles in 2545.

June

 * June 1
 * The Siege of the Inner Colonies begins, as the Covenant begins invading human strongholds, in 2536.


 * June 2
 * Ripa 'Moramee, a future Arbiter, is born on Malurok in 2478.
 * James Cutter, captain of, is born on Reach in 2479.
 * A skirmish in the Theta Ursae Majoris system occurs, resulting in a draw, in 2501.


 * June 3
 * Taylor Miles, a retired Orbital Drop Shock Trooper, is born on Mars in 2519.
 * Operation: TORPEDO occurs on Pegasi Delta, resulting in the deaths of 298 of the 300 members of SPARTAN-III Beta Company, in 2545.


 * June 4
 * Michael "Mickey" Crespo enlists in the UNSC Marine Corps in 2548.


 * June 5
 * The United Nations is formed on Earth in 1945.
 * Catherine Halsey becomes Chief Scientist of the Office of Naval Intelligence in 2522.
 * Gabriel Thorne, a Spartan-IV, is born on Earth in 2534.


 * June 12
 * Kojo "Romeo" Agu, Orbital Drop Shock Trooper and Spartan-IV, is born on Madrigal in 2524.
 * Catherine Halsey sends her daughter to live with with her father, Jacob Keyes, on Luna in 2531.


 * June 13
 * Lyrenne Castilla becomes recognized as a high-ranking Insurrectionist leader in 2503.


 * June 16
 * The Casbah City bombing occurs on Tribute, resulting in numerous civilian casualties, in 2524.


 * June 18
 * April Orenski, a Corbulo Academy of Military Science cadet and survivor, is born on Harvest in 2508.


 * June 19
 * James Cutter enlists in an Officer Candidate School in 2504.
 * The SPARTAN-II program is officially named in 2513.


 * June 27
 * Catherine Halsey plans rehabilitation therapies for washouts of the SPARTAN-II program in 2525.


 * June 28
 * Catherine Halsey relocates from Camp Hathcock to CASTLE Base on Reach in 2525.

July

 * July 1
 * The Covenant begins to glass Harvest in 2525.


 * July 7
 * The Rookie enlists in the UNSC Marine Corps in 2547.


 * July 8
 * Tartarus, the future Chieftain of the Jiralhanae, is born on Doisac in 2491.


 * July 9
 * Holly Tanaka, a Spartan-IV, is born on Minab in 2530.


 * July 10
 * Samuel-034, a Spartan-II, is born on Harvest in 2511.


 * July 12
 * The Section Three of the Office of Naval Intelligence begins using a new generation of smart AI in 2531.


 * July 14
 * The Spartan-IIs participated in a training operation against UNSC Marine Corps personnel in 2523.


 * July 15
 * Michael Stanforth, a vice admiral of the UNSC Navy, is born on Earth in 2486.


 * July 17
 * Alice-130, a Spartan-II, is born on Passage in 2511.
 * The Battle of Sigma Octanus IV begins in 2552.


 * July 18
 * The Battle of Sigma Octanus IV ends, as all Covenant forces retreat, in 2552.


 * July 20
 * Captain Alexander of retires and the ship is scheduled for refit in 2520.


 * July 21
 * Catherine Halsey begins screening candidates for the SPARTAN-II program with Jacob Keyes in 2517.


 * July 23
 * The Fleet of Valiant Prudence arrive at Reach and attempts to severe the off-world planet's communications in 2552.


 * July 24
 * claims to have begun the colonization of Tribute in 2364.
 * Parg Vol, a terrorist and former Covenant Field Master, is born on Malurok in 2481.
 * NOBLE Team investigates the downed Visegrad Relay on Reach and discover the Covenant's presence on the planet in 2552.


 * July 25
 * The Fall of Reach begins in 2552.


 * July 26
 * The Covenant attacks SWORD Base on Reach, an attack that NOBLE Team stop, in 2552.


 * July 27
 * Operation: PROMETHEUS as SPARTAN-III Alpha Company attacks K7-49, a Covenant world, in 2537.


 * July 28
 * A day of mourning is proclaimed by the UNSC following the apparent death of Preston Cole in 2543.


 * July 29
 * SPARTAN-III Alpha Company destroys most Covenant reactors at K7-49 in 2537.


 * July 30
 * Catherine Halsey begins working on the MJOLNIR Powered Assault Armor in 2511.

August

 * August 2
 * Covenant reinforcements arrive at K7-49 and all participating members of SPARTAN-III Alpha Company are killed in 2547.


 * August 7
 * Marcille Johnson, aunt to Avery Johnson, passes away on Earth in 2524.


 * August 8
 * begins colonizing Tribute in 2364.
 * Catherine Halsey is recruited by the Office of Naval Intelligence in 2510.
 * James Cutter becomes commander of in 2519.
 * James Cutter becomes captain of in 2525.


 * August 10
 * Avery Johnson goes on a drinking spree after learning of his aunt's death and is transferred to Harvest in 2524.


 * August 12
 * Mason Hundley, an Office of Naval Intelligence operative, is born on Luna in 2532.
 * Covenant and UNSC forces battle at Szurdok Ridge on Reach in 2552.


 * August 13
 * Ellen Anders, a renowned xenobiologist, is born on Arcadia in 2503.
 * Sixty percent of the UNSC's fleet is recalled to Reach to aid in the ongoing battle in 2552.


 * August 14
 * Operation: UPPER CUT is initiated to destroy Long Night of Solace over Reach in 2552.


 * August 15
 * Thomas Lasky, captain of, is born on Mars in 2510.


 * August 16
 * Robert Watts, founder of the United Rebel Front, is born on Mars in 2455.


 * August 17
 * Preston Cole and Inna Volkov marry on Luna in 2492.
 * Catherine Halsey and Jacob Keyes screen John-117 for the SPARTAN-II program on Eridanus II in 2517.
 * John Forge is nearly court-martialed after being incarcerated for assaulting a senior officer in 2530.
 * Smart AI Black-Box is created on the human Inner Colony of Mars in 2552.


 * August 18
 * The Siege of New Alexandria begins on Reach in 2552.


 * August 22
 * Hod Rumnt, the future High Prophet of Mercy, is born on High Charity in 2332.
 * Edward Buck, Orbital Drop Shock Trooper and Spartan-IV, is born on Draco III in 2510.


 * August 23
 * New Alexandria's population is evacuated during the ongoing Fall of Reach in 2552.


 * August 24
 * Paul DeMarco, a Spartan-IV, is born on Algolis in 2532.
 * SPARTAN-III Beta Company undergoes a series of training exercises to select candidates for further training in 2541.


 * August 25
 * Doctor Catherine Halsey selects for Operation: RED FLAG in 2552.


 * August 26
 * Survivors at New Alexandria are evacuated from the city's remains in 2552.


 * August 27
 * Carter-A259, a Spartan-III, is born on Biko in 2520.
 * The Spartan-IIs are debriefed on Operation: RED FLAG on Reach in 2552.


 * August 29
 * John-117 is first paired with Cortana, while Catherine Halsey is evacuated to CASTLE Base in 2552.


 * August 30
 * Reach falls to the Covenant as leaves the system in 2552.

September

 * September 1
 * receives a refit at Reach and begins serving the UNSC Navy as a ground support vessel in 2520.
 * Catherine Halsey works on improving the MJOLNIR Powered Assault Armor prototypes in 2525.


 * September 2
 * Human freighter Horn of Plenty is attacked and raided by Covenant missionary ship Minor Transgression in 2524.


 * September 3
 * Michael Sullivan, Senior Communications Director of the Office of Naval Intelligence, is born on Emerald Cove in 2510.
 * The crew of Covenant missionary ship Minor Transgression learn of Harvest's location in 2524.


 * September 4
 * Terrence Hood, Chief of Naval Operations and Chairman of the UNSC Security Council, is born on Earth in 2490.
 * Catherine Halsey attempts to build a smart AI fractal housing within slipstream space in 2547.
 * Wagner reports to the UNSC Security Council on the Fall of Reach in 2552.


 * September 7
 * Catherine Halsey initiates Operation: WHITE GLOVE, destroying CASTLE Base in 2552.


 * September 8
 * With recent breakthroughs in flash cloning, Catherine Halsey begins selecting Spartan-II candidates in 2511.


 * September 9
 * Taylor "Dutch" Miles enlists in the UNSC Marine Corps in 2540.
 * The Fall of Arcadia occurs, resulting in the Covenant glassing the planet, in 2549.


 * September 10
 * Naomi-010 is conscripted into the SPARTAN-II program and replaced with a flash clone on Sansar in 2517.


 * September 11
 * Spartan-IIs train against instructors donning Mark I MJOLNIR armor in 2525.


 * September 12
 * The Spartan-IIs are briefed for their first mission aboard in 2525.
 * The Massacre at Eridanus Secundus occurs in 2552.


 * September 13
 * Operation: FIRST STRIKE results in the destruction of Unyielding Hierophant and most of its fleet in 2552.


 * September 14
 * The Spartan-IIs capture Colonel Robert Watts of the United Rebel Front on a mission at Eridanus Secundus in 2525.
 * A new set of orbital defense platforms are scheduled to come online over Earth in 2552.


 * September 15
 * James Cutter enrolls in the UNSC School of the North Star on Earth in 2500.
 * Naomi-010, a Spartan-II, is born on Sansar in 2511.
 * Kelly-087 is conscripted into the SPARTAN-II program and replaced with a flash clone on Imber in 2517.


 * September 16
 * Catherine Halsey and Jacob Keyes finish screening candidates for the SPARTAN-II program in 2517.
 * The distress signal from freighter Horn of Plenty is received by Sif on Harvest in 2524.


 * September 18
 * Jacob Keyes and other key crew of awake to check the ship's status in 2552.


 * September 19
 * arrives at Installation 04, after the Covenant, and a begins in 2552.
 * Jacob Keyes is captured by the Covenant but rescued by John-117 on Installation 04 in 2552.


 * September 20
 * John-117 meets 343 Guilty Spark on Installation 04, while the Covenant inadvertently releases the Flood in 2552.
 * The SPARTAN-IV program enters development under the oversight of Margaret Parangosky in 2552.


 * September 21
 * Rtas 'Vadum, former Covenant commander and Swords of Sanghelios founder, is born on Sanghelios in 2487.
 * Preston Cole enlists in the UNSC Navy in 2488.
 * Kelly-087, a Spartan-II, is born on Imber in 2510.
 * The Battle of Sargasso takes place in 2546.
 * John-117 resolves to destroy Installation 04 to stop the Flood in 2552.


 * September 22
 * Preston Cole formulates a new way of calculating slipstream space input parameters in 2489.
 * Installation 04 is destroyed, leaving only a handful of survivors in 2552.


 * September 23
 * Seventy-five conscripted members of the SPARTAN-II program are brought to Reach in 2517.
 * Survivors of Installation 04 rescue survivors of the Fall of Reach in 2552.


 * September 24
 * The training of the Spartan-II candidates begins, led by Franklin Mendez, in 2517.
 * Cargo vessel is boarded and captured by the Eridanus rebels in 2517.


 * September 25
 * The second day of training, which includes a Ring the Bell exercise, for the Spartan-II candidates begins in 2517.


 * September 26
 * Jameson Locke formulates a target profile on Thel 'Vadamee for ONI in 2552.


 * September 27
 * Carris-137 accidentally kills a handler during her SPARTAN-II training in 2520.


 * September 28
 * The Spartan-II candidates have their heads shaved, much to Kelly-087's violent "protest", in 2517.


 * September 30
 * Cadmon Lasky, an Orbital Drop Shock Trooper, is born on Mars in 2507.

October

 * October 7
 * CMA Battle Group 4 arrive at Harvest to investigate contact loss, but only Heracles escapes destruction by the Covenant in 2525.


 * October 8
 * Floral Express discovers Installation 03 after fleeing the Battle of Tribute in 2552.


 * October 19
 * Gek 'Lhar, terrorist and lieutenant to Jul 'Mdama, is born on Sanghelios in 2499.
 * Kurt-051, a Spartan-II, is born on Circumstance in 2511.
 * Anthony Madsen, a Spartan-IV, is born on New Llanelli in 2530.


 * October 20
 * Michael "Mickey" Crespo, a former Orbital Drop Shock Trooper and former Spartan-IV, is born on Luna in 2530.
 * The Battle of Earth begins when the Covenant arrives at the planet in 2552.
 * Arbiter Thel 'Vadamee wipes out Sesa 'Refumee and his heretics and "rescues" 343 Guilty Spark in 2552.


 * October 21
 * The Battle of Alpha Aurigae takes place, resulting in a UNSC victory in 2526.
 * The Battle of Mombasa ends in a Covenant victory in 2552.


 * October 22
 * Forerunner artifacts are found in Zone 67 on Onyx in 2511.


 * October 24
 * James Ackerson successfully proposes the SPARTAN-III program to leading members of the Office of Naval Intelligence in 2531.


 * October 25
 * The Office of Naval Intelligence sends an exploration-and-neutralization team to Installation 03 in 2552.
 * A skirmish occurs on Mona Lisa when the Flood infect the ship's crew in 2552.


 * October 28
 * Lod Mron, the future High Prophet of Regret, is born on High Charity in 2461.


 * October 31
 * The Battle of Onyx begins between the UNSC and local Sentinels in 2552.

November

 * November 1
 * The United Nations Space Command is ordered to full alert in wake of the Covenant threat in 2525.


 * November 2
 * Retired Preston Cole is convinced to lead a battle group to retake Harvest and he is reinstated into the UNSC Navy in 2525.
 * The Spartan-IIs are briefed on the Covenant threat and introduced to Project: MJOLNIR in 2525.
 * The Battle of Installation 05 begins when the Covenant and UNSC discover the Halo in 2552.


 * November 3
 * Preston Cole, an admiral of the UNSC Navy, is born on Earth in 2470.
 * The Great Schism begins, leading to High Charity's fall and an abrupt end to the Battle of Onyx in 2552.
 * Blue Team engages Covenant forces throughout Earth in 2552.
 * Sangheili colony Joyous Exultation is destroyed by a NOVA bomb in 2552.


 * November 4
 * Tedra Grant, a Spartan-IV, is born on Arcadia in 2533.


 * November 7
 * Kurt-051 is taken to secretly train the Spartan-IIIs and is officially declared MIA, after a mission with Blue Team in 2531.
 * Cortana is created from Catherine Halsey's flash cloned brain in 2549.
 * A Catalog unit resumes its duties after awaking from dormancy in 2552.


 * November 8
 * The Forerunner Dreadnought arrives in the Sol system with John-117 aboard in 2552.


 * November 10
 * Tobias Fleming Shaw, the co-creator of the Shaw-Fujikawa Slipspace Drive, passes away in 2317.


 * November 12
 * Preston Cole is given command of and prepares himself for his first confrontation with the Covenant in 2525.


 * November 16
 * James Cutter is assigned to serve on in 2507.


 * November 17
 * Catherine Halsey and Jacob Keyes reunite at a conference at University of Calippus, leading to Miranda Keyes' conception in 2524.
 * The Forerunner Dreadnought arrives at Earth and John-117 lands on the planet's surface in 2552.
 * The Flood attempt to infect Earth but are stopped by Shipmaster Rtas 'Vadum in 2552.
 * The Prophet of Truth and his fleet enter the Portal at Voi, pursued by the UNSC and Sangheili in 2552.


 * November 18
 * The Flood-infected High Charity arrives at Mars and enters slipspace for Installation 00 in 2552.


 * November 23
 * The Official Secrets Act is passed in 2550.


 * November 24
 * Mark V[B], the initial production model of the Mark V MJOLNIR armor, enters service in 2551.


 * November 27
 * The Battle of Chi Ceti IV occurs, resulting in a UNSC victory and the death of Sam-034 in 2525.
 * The Spartan-IIs are fitted with the MJOLNIR Powered Assault Armor/Mark IV on Chi Ceti IV in 2525.


 * November 28
 * Doctor Luther Mann discovers coordinates to Installation 07 on Trevelyan in 2553.

December

 * December 1
 * is commissioned into service with the UNSC Navy in 2510.


 * December 4
 * Catherine Halsey begins working at her new laboratory on Reach in 2510.
 * Veronica Dare, an Office of Naval Intelligence operative, is born on Actium in 2515.


 * December 5
 * Edward Buck enlists in the UNSC Marine Corps in 2528.


 * December 7
 * The flash clone of John-117 passes away in 2517.


 * December 10
 * Thel 'Vadam, Arbiter and leader of the Swords of Sanghelios, is born on Sanghelios in 2485.
 * Catherine Halsey and Franklin Mendez take note of emerging leaders among the Spartan-IIs in 2518.


 * December 11
 * Catherine Halsey works on ways to infiltrate Covenant networks and systems in 2529.
 * The Battle of Installation 00 occurs, resulting in the fall of the Covenant in 2552.
 * The Flood's infection of the Ark is stopped by the firing of Installation 04B in 2552.
 * Thel 'Vadam, John-117, and Cortana leave the Ark for Earth in in 2552.


 * December 12
 * Ivan Troy Cole is born on Luna to Inna Volkov and fathered by Preston Cole in 2492.


 * December 14
 * Kurt-051 is debriefed on the SPARTAN-III program and given leadership over its implementation on Onyx in 2531.


 * December 15
 * Carris-137, a Spartan-II, is born on Tribute in 2510.
 * Carlo Hoya, a Spartan-IV, is born on Asmara in 2533.
 * NOBLE Team undergoes a mandatory psychiatric reevaluation in 2549.


 * December 19
 * The Superintendent AI is created in 2512.
 * Nicole-458, a Spartan-II, is born on Mars in 2531.


 * December 21
 * Avery Johnson and Healy arrive at Harvest aboard in 2524.


 * December 23
 * Thel 'Vadam returns to Earth in his half of in 2552.


 * December 24
 * Catherine Halsey assigns Codename: JACKBOOT to watch the remaining flash clones of the Spartan-IIs in 2517.
 * The Battle of Groombridge-1830 takes place, resulting in a UNSC victory in 2530.


 * December 25
 * A Sangheili survivor of the Battle of Groombridge-1830 is interrogated by Preston Cole and Richard Barclay in 2530.


 * December 27
 * 497 recruits for the SPARTAN-III program's Alpha Company arrive at Camp Currahee on Onyx to train under the command of Kurt-051 in 2532.


 * December 30
 * Shadow of Intent is repaired and refitted at a mobile shipyard in 2552.


 * December 31
 * Codename: SURGEON files a report on Preston Cole in 2552.