Marathon-class heavy cruiser

The Marathon-class heavy cruiser is a cruiser classification in service with the UNSC Navy. Ships of the Marathon class are designated with a hull classification symbol of CA, indicating that vessels of the class are heavy cruisers. Marathon-class heavy cruisers are commonly reserved for use as command ships due to their durability and firepower, and are often given attack and defense roles. Rarely, these cruisers are deployed to assist forces of the United Nations Space Command in planetary invasion operations.

Built as a replacement for the, the Marathon class is nearly 1.2 kilometers long. Marathon generally serve as the backbone of fleets, though due to their limited numbers they are typically commanded by officers of the rear admiral rate or higher.

Superstructure and hull
At 1192 m long, Marathon-class heavy cruisers are approximately three times the length of a typical frigate. Despite their size, Marathon-class cruisers are dwarfed by most Covenant cruiser classes. Marathon-class heavy cruisers have a similar profile to most cruisers within the UNSC Navy. Unlike the Halcyon class, the ventral surfaces of a Marathon class are concave rather than flat. Marathons have 191 centimeter-thick layers of Titanium-A armor, allowing them to sustain far greater damage than any frigate or destroyer. Vessels of the Marathon class are renowned for their durability and extraordinary resilience. Their ability to withstand massive amounts of damage, even from numerous blasts from plasma weaponry, made the Marathon class popular among UNSC Navy officers. By 2552, Marathons were considered to be the most powerful warship ever built by humanity.

Like all warships of the UNSC Navy, Marathon-class heavy cruisers have a degree of operational flexibility through the use of modular mission packages and reconfigurable hangar bays. Though a rare configuration, cruisers of the Marathon class could be modified and equipped to function as a light carrier, sacrificing missile reloads and all of its cargo bays for additional hangar capacity.

Crew and complement
Marathon-class heavy cruisers feature a standard complement of one thousand personnel. Due to their durability and firepower, ships of the Marathon class are often reserved for admirals to use as command ships. Although, they are occasionally commanded by a captain or a rear admiral. Vessels of the class can also carry large Marine complements.

Cruisers of the Marathon class are fitted with at least two hangar bays. A large deployment bay containing numerous Single Occupant Exoatmospheric Insertion Vehicles, referred to by Orbital Drop Shock Troopers as "Hell's waiting room", is located amidships. Marathons can carry two dozen GA-TL1 Longswords; space aboard a Marathon is optimized to maximize the amount of heavy weapons and armor equipped on each ship, preventing the cruisers from carrying more space fighters. In addition, Marathon-class heavy cruisers can carry several D77-TC Pelican dropships and other ground and air vehicles.

Armaments
Marathon-class heavy cruisers are equipped with two heavy Magnetic Accelerator Cannons as the primary armament of the class. In addition to the class' MAC weaponry, these heavy cruisers are armed with a variety of other weapons that were once considered to outmatch the armaments of any other ship in service with the UNSC Navy. The secondary armament of a Marathon-class heavy cruiser is its missile delivery system which consists of 1,800 Archer missiles, as well as five fusion rockets. The tertiary armament of the heavy cruiser class is a network of point-defense guns. The Marathon class' vastly superior and larger armaments allowed it to outclass the Halcyon class in every way in terms of weaponry.

Operational history
The Marathon-class heavy cruiser was commissioned and built as a replacement for the, a smaller and more lightly armed cruiser with excessive production costs. After a brief era of service, most ships of the Halcyon class were decommissioned, which led to the Marathon class rising to prominence. By 2525, the Marathon class was the most popular line of cruiser in service with the Navy. Several Marathon-class heavy cruisers served in Battle Group X-Ray under Vice Admiral Preston Cole during the Battle of Harvest. Throughout the early years of the Human-Covenant War, Marathons continued to serve in Cole's Third Fleet. Several Marathons from the fleet, including, participated in the Harvest campaign. At least one Marathon-class heavy cruiser,, participated in the Battle of Biko, where it was destroyed by the Covenant.

As their numbers were diminished by the onslaught of the Covenant, many Marathons were reassigned to the defense of the Inner Colonies and Earth during the later years of the Human-Covenant War. Marathons were present at the Battle of Sigma Octanus IV in July 2552, including Vice Admiral Michael Stanforth's flagship Leviathan, which was severely damaged during the battle. Numerous Marathon-class heavy cruisers participated in the Fall of Reach, many of which were destroyed, including Leviathan.

At least eight Marathon-class cruisers (including and Say My Name, assigned to the Fifth Fleet, a part of the UNSC Home Fleet) were present at the onset of the Battle for Earth. Led by Fleet Admiral Joseph Harper aboard Canberra and supported by sixty-seven s, these ships formed a defensive perimeter around the orbital defense platform cluster over the Mediterranean to prevent the Fleet of Sacred Consecration from reaching Earth's surface. Admiral Carl Patterson's Battle Group Omicron, drawn from the Home Fleet, contained one Marathon-class heavy cruiser that participated in the Onyx Conflict, where she was destroyed with the rest of her battle group. Several Marathon-class cruisers of the Home Fleet were presumably destroyed over the course of the Battle for Earth, particularly after the final wave of Covenant reinforcements arrived.

Most remaining Marathon-class heavy cruisers were decommissioned after the was introduced, with only a handful staying in service. The Autumn class became slated to serve as the core of the reconstituted UNSC Navy's fleet, a role the Marathon class had previously fulfilled. A Marathon-class heavy cruiser served as the flagship of Admiral Graselyn Tuwa during an operation on Gao in 2553. The presence of the cruiser prevented Minister of Protection Arlo Casille from taking naval action against the UNSC, realizing that the cruiser could easily decimate his entire fleet of patrol corvettes.

Ships of the line

 * – Fleet Admiral Joseph Harper's flagship; led the Fifth Fleet against the Covenant during the Battle for Earth on October 20, 2552.
 * – Equipped with a saddle box drive. Destroyed during the Battle of Biko in 2526.
 * – Part of the Fifth Fleet; destroyed during the Battle of Earth on October 20, 2552.
 * – Destroyed during the Fall of Reach.
 * – Vice Admiral Michael Stanforth's flagship. Severely damaged during the Battle of Sigma Octanus IV in July 2552 and destroyed during the Fall of Reach.
 * – The lead ship of the class.
 * – Destroyed during the Harvest campaign in February 2531.
 * – Deployed ODSTs to board Solemn Penance as part of Operation: BUMRUSH during the Battle of Mombasa on October 20, 2552.

UNSC Marathon Heavy Cruiser
This element includes a single Marathon-class heavy cruiser.
 * Cost: 95 points
 * Movement: 8"
 * Damage Track: 6 • 6 • 3
 * Build rating: 2
 * Hangars: 2
 * Boarding Craft: 2
 * Security detail: 3
 * System loadouts:
 * Hard Burn (2")
 * Missile barrage
 * Point defense (4)
 * Titanium armor (3)
 * Primary weapon: Heavy MAC
 * Range: 16/32"
 * Weapon loadouts: MAC (2)
 * Firing arc: Forward
 * Dice: 8
 * Secondary Weapon: Missile batteries
 * Range: 12/24"
 * Weapon loadouts: Missiles
 * Firing arc: Forward or Port+Starboard
 * Dice: 7

UNSC Supported Marathon Heavy Cruiser
This element includes a Marathon-class heavy cruiser and one Paris-class heavy frigate.
 * Cost: 110 points
 * Movement: 8"
 * Damage Track: 7 • 6 • 3
 * Build rating: 3
 * Hangars: 2
 * Boarding Craft: 2
 * Security detail: 4
 * System loadouts:
 * Hard Burn (2")
 * Missile barrage
 * Point defense (4)
 * Titanium armor (4)
 * Primary weapon: Heavy MAC
 * Range: 16/32"
 * Weapon loadouts: MAC (2)
 * Firing arc: Forward
 * Dice: 10
 * Secondary Weapon: Missile batteries
 * Range: 12/24"
 * Weapon loadouts: Missiles
 * Firing arc: Forward or Port+Starboard
 * Dice: 8

UNSC Reinforced Marathon Heavy Cruiser
This element includes a Marathon-class heavy cruiser and two Paris-class heavy frigates.
 * Cost: 120 points
 * Movement: 8"
 * Damage Track: 8 • 7 • 4
 * Build rating: 4
 * Hangars: 2
 * Boarding Craft: 2
 * Security detail: 4
 * System loadouts:
 * Hard Burn (2")
 * Missile barrage
 * Point defense (5)
 * Titanium armor (5)
 * Primary weapon: Heavy MAC
 * Range: 16/32"
 * Weapon loadouts: MAC (3)
 * Firing arc: Forward
 * Dice: 12
 * Secondary Weapon: Missile batteries
 * Range: 12/24"
 * Weapon loadouts: Missiles
 * Firing arc: Forward or Port+Starboard
 * Dice: 10

UNSC Paired Marathon Heavy Cruisers
This element features two Marathon-class heavy cruisers.
 * Cost: 220 points
 * Movement: 8"
 * Damage Track: 10 • 10 • 5
 * Build rating: 6
 * Hangars: 4
 * Boarding Craft: 4
 * Security detail: 6
 * System loadouts:
 * Hard Burn (2")
 * Missile barrage
 * Point defense (8)
 * Titanium armor (6)
 * Primary weapon: Heavy MAC
 * Range: 16/32"
 * Weapon loadouts: MAC (4)
 * Firing arc: Forward
 * Dice: 18
 * Secondary Weapon: Missile batteries
 * Range: 12/24"
 * Weapon loadouts: Missiles
 * Firing arc: Forward or Port+Starboard
 * Dice: 14

Trivia

 * Though in-universe the class is likely named for the Battle of Marathon, in reality its name is a reference to Bungie's Marathon trilogy and its eponymous ship, the UESC Marathon.
 * The Marathon class is featured in Halo: Fleet Battles; although the was originally intended to appear instead, it was decided that the latter's appearance would not be canonically possible. The design for the Marathon class in the game was noted to have been difficult to sculpt, although the models created by Blur Studio for Halo 2: Anniversary aided in the process.

List of appearances

 * Halo: The Fall of Reach
 * Halo: First Strike
 * Tug o' War
 * Halo 2
 * Halo Graphic Novel
 * Second Sunrise Over New Mombasa
 * Halo: Ghosts of Onyx
 * Halo: Landfall
 * Arms Race
 * Halo Wars: Genesis
 * Halo Wars


 * Halo 3: ODST
 * Halo: Evolutions - Essential Tales of the Halo Universe
 * The Impossible Life and the Possible Death of Preston J. Cole
 * Halo: Fall of Reach
 * Boot Camp
 * Covenant
 * Invasion
 * Halo: Escalation
 * Halo 2: Anniversary
 * Halo: Fleet Battles
 * Halo: Last Light
 * Halo Mythos