Important Events
The Battle of Requiem was a conflict between former Covenant forces under the command of Jul 'Mdama, UNSC forces from the UNSC Infinity and Forward unto Dawn, and Promethean forces under command of the Ur-Didact on Forerunner Shield World 0001, also known as Requiem, in July 2557.
The Raid on Ivanoff Station was an attack by the Ur-Didact and his ship Mantle's Approach on the Office of Naval Intelligence research facility Ivanoff Station nearby Halo Installation 03 in July 2557.
The New Phoenix Incident was an attack by the Ur-Didact on the Earth city of New Phoenix on July 25th, 2557 using the Composer that he had acquired from Ivanoff Station the day prior.
Important Events
The Battle of Requiem was a conflict between former Covenant forces under the command of Jul 'Mdama, UNSC forces from the UNSC Infinity and Forward unto Dawn, and Promethean forces under command of the Ur-Didact on Forerunner Shield World 0001, also known as Requiem, in July 2557.
The Raid on Ivanoff Station was an attack by the Ur-Didact and his ship Mantle's Approach on the Office of Naval Intelligence research facility Ivanoff Station nearby Halo Installation 03 in July 2557.
The New Phoenix Incident was an attack by the Ur-Didact on the Earth city of New Phoenix on July 25th, 2557 using the Composer that he had acquired from Ivanoff Station the day prior.
Summary
CLASS: Flagship of the Didact
DIMENSIONS: 143 x 139 x 371 km
SERVICE PERIOD: ~107,000 BCE - Jul 25, 2557
Serving as the flagship of the Forerunner military while the Didact was in command, Mantle's Approach was the most heavily-armed vessel the Forerunners had at their disposal, though not the largest overall. The ship was heavily involved in the fighting during the Human-Forerunner Wars, though fell into disuse following the Didact's exile after his political loss to the Master Builder. The Ur-Didact regained command of the ship briefly towards the end of the Forerunner-Flood War, though it again sat unused during the period following the Great Purification in 97,445 BCE until the Didact's reawakening during the Battle of Requiem in 2557.
Commissioned for War
Mantle’s Approach was the command ship of the Didact, serving as his personal ship of war from the time it was constructed during the Human-Forerunner Wars, through the Forerunner-Flood War and the firing of the Halo Array, and again after the return of the Didact during the Battle of Requiem. Mantle’s Approach is one of the largest Forerunner ships ever constructed, and by far the most powerful. It was involved in many battles during the war with the Flood, including the Battle of the Greater Ark. Prior to the end of that battle, the Didact used a Composer fitted onto Mantle’s Approach to compose all the humans on Omega Halo, the last of the Senescent Halos, and used their composed essences to create Promethean Knights. Due to this reckless act, the Librarian followed the Ur-Didact to Requiem, where she imprisoned him into a cryptum, leaving Mantle’s Approach to sit abandoned within Requiem for the next 100,000 years.
~107,445 BCE - 106,445 BCE
After the emergence of the Flood on ancient human worlds around 107,445 BCE, human civilization was desperate to expand their territory away from Flood-controlled regions of space. As part of this expansion, humans clashed with Forerunner-populated worlds, sparking a war between the two species.
~106,498 BCE - 106,445 BCE
The Battle of Charum Hakkor was one of the final battles of the Human-Forerunner Wars and also one of the largest, spanning over fifty years and likely consuming millions of lives.
~97,745 BCE - 97,445 BCE
The Forerunner-Flood War was a military engagement between the Forerunner species and the Flood that took place over approximately three-hundred years from 97,745 BCE until 97,445 BCE.
~97,445 BCE
The Battle of the Greater Ark was one of the final battles of the Forerunner-Flood War and saw the decimation of almost all remaining Forerunner forces just prior to the firing of the Halo Array during the Great Purification in 97,445 BCE.
Return to Service
Following the return of the Ur-Didact after he was released from his cryptum in 2557 by John-117, he sought to quickly regain command of the vessel, and used it to leave Requiem in search of a Composer. The Ur-Didact found one at Ivanoff Station nearby Gamma Halo, and using it, composed everyone on the ship, save Master Chief himself. The Ur-Didact then took Mantle’s Approach to Earth, where he began composing humans in New Phoenix in what is known as the New Phoenix Incident. Due to the actions of John-117, however, the attack was stopped and Mantle’s Approach was destroyed by a nuclear detonation within the ship.
The Battle of Requiem was a conflict between former Covenant forces under the command of Jul 'Mdama, UNSC forces from the UNSC Infinity and Forward unto Dawn, and Promethean forces under command of the Ur-Didact on Forerunner Shield World 0001, also known as Requiem, in July 2557.
The Raid on Ivanoff Station was an attack by the Ur-Didact and his ship Mantle's Approach on the Office of Naval Intelligence research facility Ivanoff Station nearby Halo Installation 03 in July 2557.
The New Phoenix Incident was an attack by the Ur-Didact on the Earth city of New Phoenix on July 25th, 2557 using the Composer that he had acquired from Ivanoff Station the day prior.

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