Important Events
The Battle of Psi Serpentis was a major conflict between a UNSC fleet of 162 warships led by the UNSC Everest and Admiral Preston Cole and two fleets of Covenant warships totaling over 300 ships in the Psi Serpentis system in April 2543.
The Battle of Sigma Octanus IV was a large-scale space and ground battle between UNSC and Covenant forces in the Sigma Octanus system in July 2552.
The Fall of Reach was possibly the largest battle during the Human-Covenant War, taking place in the Epsilon Eridani system, in orbit and on the ground of Reach, humanity's largest military stronghold.
The Battle of Installation 04 was an engagement between the UNSC Pillar of Autumn and the Covenant Fleet of Particular Justice on and around the Forerunner megastructure known as Installation 04, or Alpha Halo, in the Soell system.
The Battle for Earth was a large-scale space, air, and ground battle between the invading Covenant forces and the UNSC Home Fleet on and around Earth at the end of 2552.
The Onyx Conflict was a major engagement between UNSC, Covenant, and Forerunner forces on and around the planet of Onyx in the Zeta Doradus system in October and November 2552.
The Battle of Installation 05 was an engagement between the Covenant forces, including those that fled the Battle for Earth, High Charity, and the Second Fleet of Homogeneous Clarity, and the UNSC-allied forces, including the UNSC In Amber Clad led by Miranda Keyes, and the Fleet of Retribution led by the Arbiter Thel 'Vadam.
The Battle of Installation 00 was a major conflict between the forces stationed aboard the UNSC Forward Unto Dawn and Arbiter Thel 'Vadam's Fleet of Retribution, and the Covenant fleet loyal to the Prophet of Truth.
Important Events
The Battle of Psi Serpentis was a major conflict between a UNSC fleet of 162 warships led by the UNSC Everest and Admiral Preston Cole and two fleets of Covenant warships totaling over 300 ships in the Psi Serpentis system in April 2543.
The Battle of Sigma Octanus IV was a large-scale space and ground battle between UNSC and Covenant forces in the Sigma Octanus system in July 2552.
The Fall of Reach was possibly the largest battle during the Human-Covenant War, taking place in the Epsilon Eridani system, in orbit and on the ground of Reach, humanity's largest military stronghold.
The Battle of Installation 04 was an engagement between the UNSC Pillar of Autumn and the Covenant Fleet of Particular Justice on and around the Forerunner megastructure known as Installation 04, or Alpha Halo, in the Soell system.
The Battle for Earth was a large-scale space, air, and ground battle between the invading Covenant forces and the UNSC Home Fleet on and around Earth at the end of 2552.
The Onyx Conflict was a major engagement between UNSC, Covenant, and Forerunner forces on and around the planet of Onyx in the Zeta Doradus system in October and November 2552.
The Battle of Installation 05 was an engagement between the Covenant forces, including those that fled the Battle for Earth, High Charity, and the Second Fleet of Homogeneous Clarity, and the UNSC-allied forces, including the UNSC In Amber Clad led by Miranda Keyes, and the Fleet of Retribution led by the Arbiter Thel 'Vadam.
The Battle of Installation 00 was a major conflict between the forces stationed aboard the UNSC Forward Unto Dawn and Arbiter Thel 'Vadam's Fleet of Retribution, and the Covenant fleet loyal to the Prophet of Truth.
Evo-014's Summary 2540 - 2552 CE
In the final years of the war, the Covenant intensified their assault on human-occupied space, driven by their relentless quest for dominance. Their renewed push unleashed unprecedented destruction and devastation, as they sought to eradicate humanity from the galaxy. Meanwhile, humanity made astonishing discoveries amidst the chaos, unearthing ancient Forerunner constructs that held unimaginable power and secrets. These enigmatic remnants of a lost civilization became a focal point in the conflict, offering glimpses into the mysteries of the universe.
In this tumultuous era, the fate of civilizations hung in the balance. The relentless struggle against the Covenant, intertwined with the discoveries of Forerunner artifacts and the emergence of the Flood, shaped the galaxy's destiny. Through unwavering resilience and sacrifices, humanity overcame overwhelming odds, marking the triumph of hope and determination in the face of relentless adversity.
A New Hope
In the early years of the war, the Covenant unleashed a devastating onslaught, obliterating numerous outer colonies in their path of destruction. The UNSC valiantly fought back, marshaling their limited resources to confront the technologically superior alien armada. Despite their unwavering determination, the odds were stacked against them.
Amidst the chaos and despair, one figure emerged as a symbol of hope. The legendary Admiral Preston Cole, known for his strategic brilliance, achieved remarkable victories against the Covenant. His tactical prowess momentarily stemmed the relentless tide of the alien forces, offering a glimmer of respite to humanity. However, even his exceptional leadership could only slow the Covenant's inexorable push into human-occupied space.
Operation: GREY VEIL was an Office of Naval Intelligence mission to assassinate a Covenant Prophet on the planet Heian sometime in 2541.
The Battle for Alluvion was a major conflict in the Human-Covenant War that took place in the Bhaakto system some time in 2542.
The Battle of Psi Serpentis was a major conflict between a UNSC fleet of 162 warships led by the UNSC Everest and Admiral Preston Cole and two fleets of Covenant warships totaling over 300 ships in the Psi Serpentis system in April 2543.
The Battle of Miridem was an engagement between human and Covenant forces on and around the colony of Miridem.
Operation: WARM BLANKET was an operation to recover Doctor Halsey from the Covenant after her capture during the Battle of Miridem in 2544.
Operation: IRON FIST was a military operation on the colony of Miridem after the Battle of Miridem in 2544 and prior to the colony's glassing.
Losses Mounting
Confronted with the imminent threat of annihilation, the UNSC made a decisive move by implementing the Cole Protocol. This strategic order aimed to safeguard the location of other human colonies from falling into Covenant hands through the capture of UNSC ships and AIs. Although effective, the unfortunate reality was that it took the UNSC a decade to enact this protocol, allowing the majority of outer colonies to succumb to the Covenant's relentless onslaught.
This delay in action fueled resentment among colonists who believed that the UNSC had sacrificed the Insurrection-friendly outer colonies to the Covenant's wrath. The bitter aftermath of this perceived betrayal tarnished the reputation of the UNSC in the eyes of many. However, despite these setbacks, the subsequent decade witnessed a notable deceleration in the Covenant's advance.
Nevertheless, humanity continued to suffer devastating losses as world after world fell to the Covenant forces. In the face of mounting adversity, only Earth, the inner colonies, and a dwindling handful of outer colonies remained under human control, serving as the last bastions of hope in the raging storm of war.
Spartan-III Gamma Company was the last of three Spartan-III companies to be recruited, trained, and put into service.
Operation: TORPEDO was a mission by Spartan-III Beta Company to infiltrate and destroy a Covenant refinery on Pegasi Delta, the moon of 51 Pegasi B in the 51 Pegasi system.
The Battle of New Llanelli was an engagement between UNSC and Covenant forces on the colony world of New Llanelli in the Brunel system, sometime in 2546.
In an effort to boost morale, the Office of Naval Intelligence made public the existence of the Spartan-II program and the accomplishments of the Spartan-IIs in May, 2547.
The Siege of Paris IV was a major battle between the UNSC and Covenant forces on and around the colony of Paris IV in the Paris system in 2549.
The Fall of Arcadia, also known as the Second Fall of Arcadia, was a Covenant invasion and subsequent loss of the colony world of Arcadia in the Procyon system on September 9th 2549.
The Empire Strikes Back
By 2550, the human death toll in the war had reached staggering billions. The UNSC, through the mass construction of powerful warships and the implementation of superior tactics, managed to assemble a formidable defense at the remaining colony worlds. In an impressive display of strength, a defense force comprising nearly fifty warships successfully fended off a Covenant assault of twenty-four ships at Sigma Octanus IV, overcoming odds of two-to-one. The fleet commanders were rightfully hailed for their remarkable achievement.
However, the Covenant's relentless advance continued, and merely a month later, they discovered and invaded Reach, the largest inner colony world. The UNSC mobilized all available military assets to defend Reach, but despite the heroic efforts of its personnel, the overwhelming Covenant force, consisting of over 300 warships and countless ground troops, ultimately overpowered the colony. The devastating battle resulted in the loss of more than 130 UNSC warships and approximately 700 million lives, along with the relinquishment of one of humanity's key military strongholds.
The Battle of Gamma Pavonis VII was a small skirmish over the planet of Gamma Pavonis VII in the Gamma Pavonis system in early 2550.
The Battle of Beta Eridani was a Covenant assault on UNSC forces in the Beta Eridani system, shortly before the summer in 2552.
The Massacre of Troy was a Covenant invasion of the colony of Troy in the Hellespont system approximately five months prior to the Battle for Earth.
The Battle of New Jerusalem was a Covenant attack on the colony of New Jerusalem in the Cygnus system sometime in July or August 2552.
Operation: RED FLAG was a planned operation by both the Office of Naval Intelligence and the UNSC to use Spartans to capture a Covenant ship, use it to penetrate into Covenant space, and capture a Hierarch, with the intent of using the Prophet to broker a cease-fire.
The Battle of Sigma Octanus IV was a large-scale space and ground battle between UNSC and Covenant forces in the Sigma Octanus system in July 2552.
The Fall of Reach was possibly the largest battle during the Human-Covenant War, taking place in the Epsilon Eridani system, in orbit and on the ground of Reach, humanity's largest military stronghold.
The Raid on Verge was a covert mission undertaken by Spartan-II Black Team to infiltrate and destroy a Covenant mining and refinery operation on the recently invaded former colony of Verge towards the end of July 2552.
The Battle of Line Installation 1-4 was a conflict on Line Installation 1-4, a Forerunner defensive facility that was part of the Jat-Krula, the Forerunner's version of the Maginot Line during the Forerunner-Flood war in August 2552.
The Battle of Tribute was a large-scale invasion of the colony world Tribute in the Epsilon Eridani system by Covenant forces during and after the Fall of Reach in 2552.
Return of the Demon
In the aftermath of the Fall of Reach, the majority of remaining UNSC forces were called back to Earth's defense. Nevertheless, when the Covenant finally arrived in the Sol system on October 20th, 2552, the UNSC struggled to mount a formidable defense. Thanks to the efforts of Spartan John-117, humanity managed to sustain the fight for several weeks, despite extensive damage and destruction across large portions of the planet. Billions of residents were forced to evacuate off-world in a desperate bid to survive humanity's last stand.
On November 3rd, 2552, the tide of battle took an unexpected turn when the Prophet of Truth, one of the Covenant leaders, executed his plan to replace the Sangheili with the Jiralhanae as the military commanders. This act ignited the Great Schism, a civil war between the Sangheili and the Jiralhanae within the Covenant ranks. With Covenant forces turning their weapons against each other, humanity seized the opportunity to regain the upper hand and push the Covenant off-planet.
In a desperate final gambit, the Prophet of Truth attempted to activate the Halo Array through the Portal at Voi, intending to wipe out all sentient life across the galaxy. However, Spartan John-117, alongside Arbiter Thel 'Vadam, Commander Miranda Keyes, and Sergeant Avery Johnson, pursued the remaining Covenant forces, successfully stopping the Prophet and eliminating him in the process. The fighting finally ceased, and while humanity's victory was more a result of the Covenant's defeat, the war had come to an end.
Operation: FIRST STRIKE was a mission undertaken by John-117 and several other Spartan-IIs to infiltrate and destroy the Covenant space station Unyielding Hierophant and associated armada of over 500 warships in the Tau Ceti system prior to the Covenant's invasion of Earth.
The Battle of Installation 04 was an engagement between the UNSC Pillar of Autumn and the Covenant Fleet of Particular Justice on and around the Forerunner megastructure known as Installation 04, or Alpha Halo, in the Soell system.
The Battle for Earth was a large-scale space, air, and ground battle between the invading Covenant forces and the UNSC Home Fleet on and around Earth at the end of 2552.
The Skirmish on Mona Lisa was a minor conflict that occurred in the debris field of Installation 04 in the Soell system aboard the prison ship Mona Lisa between UNSC forces and an outbreak of the Flood on October 25th, 2552.
The Onyx Conflict was a major engagement between UNSC, Covenant, and Forerunner forces on and around the planet of Onyx in the Zeta Doradus system in October and November 2552.
The Battle of Installation 05 was an engagement between the Covenant forces, including those that fled the Battle for Earth, High Charity, and the Second Fleet of Homogeneous Clarity, and the UNSC-allied forces, including the UNSC In Amber Clad led by Miranda Keyes, and the Fleet of Retribution led by the Arbiter Thel 'Vadam.
The Great Schism was a conflict between the forces loyal to the Covenant, led mostly by the Jiralhanae, and the Sangheili, beginning on November 3rd, 2552 and continuing off and on until the Rule of the Created in 2558.
The Battle of Installation 00 was a major conflict between the forces stationed aboard the UNSC Forward Unto Dawn and Arbiter Thel 'Vadam's Fleet of Retribution, and the Covenant fleet loyal to the Prophet of Truth.
Operation: SUNSPEAR was a mission to infiltrate Covenant space and destroy a major population center as an act of revenge for the Fall of Reach at the end of 2552.