Here is a list of UNSC guided missile destroyers.
"Space-borne guided missile destroyers? Yeah I heard of them, suppose to pack a punch, even against Covie ships. I'll be the judge of that."
Anonymus UNSC Marine, c. May 13th, 2556.
The Midlothian-class guided missile destroyer was introduced on June 6th, 2554 and is slowly becoming a new force in the Navy, with an estimated 2,316 are to be in service in 2597.
Pre-2554 destroyers: Interplanetary Era; all shared the same designation during this era
•UNSC Enterprise (DD-01) [Built by the United Republic of North America, transferred to the UNCF command as a destroyer, flagship of newly formed UNSC 1st Fleet until the commissioning of the UNSC Expeditious (C-01)]
•UNSC Discovery (DD-02) [Built by the Republic of China, transferred to UNCF command as a destroyer, flagship of the newly formed UNSC 2nd Fleet until the commissioning of the UNSC Audacious (C-03)]
•UNSC Adventure (DD-03) [Built by the European Union, transferred to UNCF command as a destroyer, flagship of the newly formed UNSC 3rd Fleet until the commissioning of the UNSC Intrepid (C-04)]
•UNSC Triumph (DD-04) [Built by the Russian Federation, transferred to UNCF command as a destroyer, flagship of the newly formed UNSC 4th Fleet until the commissioning of the UNSC Daring (C-06)]
•UNSC Endeavor (DD-05) [Built by multiple countries, transferred to UNCF command as a destroyer, flagship of the newly formed UNSC 5th Fleet until the commissioning of the UNSC Stalwart (C-09)]
•Sentry-class: 15 completed (first class of destroyers under the banner of the UNCF and later UNSC; all retired or scrapped, some laid up as museum ships; active during the Interplanetary War)
•Security-class: 20 completed (second class of destroyers under the banner of the UNCF and later UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the Interplanetary War)
•Action-class: 26 completed (first class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the Interplanetary War)
•Soldier-class: 12 completed (second class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the Interplanetary War)
•Warrior-class: 22 completed (third class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the Interplanetary War)
•Guardian-class: 48 completed (fourth class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active after the Interplanetary War)
Pre-2554 destroyers: Colonial Era/Insurrection Era; more diverse in terms of weapons and armor.
•Negotiation-class light destroyer: 647 (sixth class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the majority of the Colonial Era)
•Minotaur-class heavy destroyer: 978 completed (fifth class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the waning years of the Colonial Era)
•Sentinel-class light destroyer: 718 completed (seventh class of destroyers built entirely by the UNSC; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the waning years of the Colonial Era)
•Diligence-class light destroyer: 513 completed (all retired, scrapped, or mothballed; in service from 2424 to 2493, repurposed as troop carriesr; all retired, used as target practice, or scrapped; some laid up as museum ships;)
•Gorgon-class heavy destroyer: 426 completed (all retired, in service from 2490 to 2506; most are repurposed as troop carriers; all retired, used as target practice, or scrapped; some laid up as museum ships; active during the early Insurrection Era)
•Hillsborough-class light destroyer: 679 completed (in reserves, in service from 2506 to 2522; only ones in service with UNSC Navy, the rest are given to CMA Navy. Repurposed as troop carriers alongside the Gorgon-class and Diligence-class destroyers; all retired, used as target practice, or scrapped; some laid up as museum ships; active ruing the Insurrection and early Great War)
Pre-2554 destroyers: Insurrection Era/Great War Era; UNSC destroyers were standardized during both eras.
•Thanatos-class: 100 completed (in reserves, in service from 2506 to 2510)
•Halberd-class: 1,549 completed (in service from 2510 to present; major and famous vessels listed only; all active or retired; destroyed by enemy fire, used as target practice, scrapped, or laid up as museum ships)
*UNSC Halberd (DD-101)
*UNSC Pioneer (DD-102)
*UNSC Silvercrest (DD-106)
*UNSC Iwo Jima (DD-110)
*UNSC Athena (DD-114)
*UNSC Dragon (DD-115) (captured in 2524 by the Victorian Independent State and renamed URF Origami, returned to the UNSC following the Battle of 111 Tauri Gamma by SPARTAN BLUE Team)
*UNSC Iroquois (DD-216)
*UNSC Cypria (DD-240)
*UNSC Alfred the Great (DD-269)
*UNSC Glorious (DD-275)
*UNSC Ardent (DD-300)
*UNSC The Heart of Midlothian (DD-366) (served over Miridem and Adrastos as a part of the 3rd Fleet; destroyed over Algolis, c. April 8th, 2548)
*UNSC Minotaur (DD-401)
*UNSC Bougainville (DD-413)
*UNSC Herodotus (DD-431)
*UNSC Benn (DD-432)
*UNSC Jupiter (DD-478)
*UNSC Ariadne (DD-509)
*UNSC Eros (DD-561)
*UNSC Odin (DD-596) (fought over Eridanus II, New Constantinople, Miridem, Chi Rho, and Victoria. Captured by the URF in 2546 while in dry dock over Barrow and renamed the Revolutionary Fervor, returned to the UNSC by ARSOC Group/CASTLE Team in early-2552, destroyed over New Jerusalem, c. September 6th, 2552)
*UNSC Llanover (DD-608)
*UNSC Phobos (DD-609)
*UNSC Poseidon (DD-610)
*UNSC Dunedin (DD-611)
*UNSC Peking (DD-616) (fought and heavily damaged over Jericho VII in 2535, sent to patrol the Iota Eridanus asteroid belt, captured by the Eridanus People's Republic in 2540, stripped of most of it weapons and other useful components before being sold to the Victorian Independent State and renamed the Origami II, rearmed and used to attack UNSC privateer vessels, outfitted with the weapons and supplies taken from the privateers, destroyed over Victoria, c. August 15th, 2553)
*UNSC Glasgow Kiss (DD-692)
*UNSC Sceptre (DD-711)
*UNSC Sheffield (DD-726) (destroyed over Earth, c. October 20th, 2552)
*UNSC For All Glory (DD-748)
*UNSC Huntsman (DD-859)
*UNSC Neptune (DD-985) (served over Miridem, Victoria, and Adrastos. Captured by the URF in 2549, renamed the Iliad II and based out of Talista, took heavy damage during a battle over Sigma Octanus IV in January 2552, destroyed over Talista, c. July 7th, 2558)
*UNSC Ballymena (DD-1003)
*UNSC Brasidas (DD-1004)
*UNSC Hardy (DD-1011)
*UNSC Albatross (DD-1072)
*UNSC Lancastria (DD-1094)
*UNSC Tharsis (DD-1099)
*UNSC Vesper (DD-1116)
*UNSC Whirlwind (DD-1130)
*UNSC Cornwall (DD-1138)
*UNSC Glowworm (DD-1152)
*UNSC Aeneas (DD-1159)
*UNSC Norfolk (DD-1174) (destroyed over Draco III, c. 2545)
*UNSC Broadsword (DD-1211)
*UNSC Limerick (DD-1241)
*UNSC Steady (DD-1247)
*UNSC Wren (DD-1229)
*UNSC Blake (DD-1246)
*UNSC Carinthia (DD-1252)
*UNSC O'Donnell (DD-1255)
*UNSC Sabre (DD-1288)
*UNSC Lapwing (DD-1347)
*UNSC Forester (DD-1348)
*UNSC St. Achilleus (DD-1357)
*UNSC Wakeful (DD-1358)
*UNSC Spirit of Miridem (DD-1360)
*UNSC Starling (DD-1461)
*UNSC Venus (DD-1462)
*UNSC Basilisk (DD-1463)
*UNSC Hercules (DD-1464)
*UNSC Falconer (DD-1468)
*UNSC Capable (DD-1547)
Post-2554 destroyers:
Guided missile destroyers (DDG): introduced in 2553 in order to replace the destroyers lost during the war. Has a profile similar to the Halberd- and Thanatos-class (DD) before it, the only difference is that the ships of this classification carries a dedicated squadron of F-41 Broadswords on board. They also have a wing of UNSC Marine Aviation D79H-TC Pelicans, G79H-TC/MA Goshawks, UV-144B Falcons, A-26 Skyhawk IIs, and a MV-14B Super Hornets assigned to this new design too.
Midlothian-class: 78 vessels completed, 56 undergoing trials, 34 under construction, many more planned
*UNSC The Heart of Midlothian II (DDG-001)
*UNSC Wolf (DDG-002)
*UNSC Sun Tzu (DDG-003)
*UNSC Vengeance (DDG-003)
*UNSC Sheffield (DDG-004)
*UNSC Majestic (DDG-005)
*UNSC Final Effort (DDG-006)
*UNSC Hope (DDG-007)
*UNSC Make My Day (DDG-008)
*UNSC Starlit Sky (DDG-009)
*UNSC Dragon (DDG-010)
*UNSC Valiant Warrior (DDG-011)
*UNSC Fateful Journey (DDG-012)
*UNSC From the Dust Returned (DDG-013)
*UNSC Final Charge (DDG-014)
*UNSC Courageous (DDG-015)
*UNSC Warsaw (DDG-016)
*UNSC Conviction (DDG-017)
*UNSC Obliterator (DDG-018)
*UNSC Out of the Past (DDG-019)
*UNSC The Hammer Falls (DDG-020)
*UNSC Inheritance (DDG-021)
*UNSC From the Ruins (DDG-022)
*UNSC Payback's a Bitch (DDG-023)
*UNSC Full Circle (DDG-024)
*UNSC Howling Dark (DDG-025)
*UNSC Destiny's Child (DDG-026)
*UNSC Selborne (DDG-027)
*UNSC Daring (DDG-028)
*UNSC Victory (DDG-029)
*UNSC Legion of Iron (DDG-030)
*UNSC Red Baron (DDG-031)
*UNSC Avalon (DDG-032)
*UNSC Hope of Tomorrow (DDG-033)
*UNSC Odyssey of the Stars (DDG-034)
*UNSC Never Say Never (DDG-035)
*UNSC Fury of the Gods (DDG-036)
*UNSC A Soldier's Duty (DDG-037)
*UNSC Brave to the End (DDG-038)
*UNSC Comanche (DDG-039)
*UNSC Wind Rider (DDG-040)
*UNSC Into the Sky (DDG-041)
*UNSC The Last Call (DDG-042)
*UNSC Once More (DDG-043)
*UNSC At The Stand (DDG-044)
*UNSC Wild Weasel (DDG-045)
*UNSC First to the Party (DDG-046)
*UNSC Arrow's Mark (DDG-047)
*UNSC John Paul Jones (DDG-048)
*UNSC Jacob Keyes (DDG-049)
*UNSC Akono Menteith Senior (DDG-050)
*UNSC Making A Stand (DDG-051)
*UNSC The Need to Hunt (DDG-052)
*UNSC Winchester (DDG-053)
*UNSC First to Strike (DDG-054)
*UNSC Kiowa (DDG-055)
*UNSC Brace For Contact (DDG-056)
*UNSC Never Late (DDG-057)
*UNSC One Last Act (DDG-058)
*UNSC The Little Guy (DDG-059)
*UNSC Better To Be Safe Than Sorry (DDG-060)
*UNSC Comes Around Knocking (DDG-061)
*UNSC Sword at the Ready (DDG-062)
*UNSC Nathan James (DDG-063)
*UNSC Brave to the End (DDG-064)
*UNSC Marvel (DDG-065)
*UNSC Alexander the Great (DDG-066)
*UNSC Into the Sky (DDG-067)
*UNSC The Last Call (DDG-068)
*UNSC Shield Raised At The Ready (DDG-069)
*UNSC Odyssey of the Stars (DDG-070)
*UNSC Never Say Never (DDG-071)
*UNSC Sword at the Ready (DDG-072)
*UNSC One More Time (DDG-073)
*UNSC Brave to the End (DDG-074)
*UNSC Apache (DDG-075)
*UNSC Wichita (DDG-076)
*UNSC Arleigh Burke (DDG-077)
*UNSC Greater Than The Sum (DDG-078)
Stealth destroyers (DDS): Introduced late in the Great War, stealth destroyers fills the gap between stealth frigates and cruisers, ONI and SOCOM operates a classified number of these vessels.
•Zumwalt-class: classified number of vessels in service (first class of stealth destroyers commissioned)
The UNSC Legion of Iron is a reference to Marvel's Iron Legion. Note: I am using names from Halo Fanon just as a heads up. About several months after the end of the Siege of Victoria, the local URF cell, the Victorian Independent State, seized control of the colony, but not before the majority of UNSC battlegroup to evacuate. The VIS and the EPR belongs to Halo Fanon's Minutemen 2492 alone, credit goes to him. The 'Big Five' destroyers and the classes below them at the top belongs to Auguststorm1945, on Halo Fanon, alone.
The new Midlothian-class guided missile destroyers will replace all preexisting UNSC destroyer classes by 2597. Many surviving Halberd-class destroyers are still in service with the UNSC Navy as of 2558 and the final group has just finished completion in 2554, but are slowly being replaced by the Midlothian-class, some being laid up as museum ships, several dozen being used as target practice, sold for scrap, and the remainder are to be transferred to the UNSC Colonial Guard. The UNSC The Heart of Midlothian II (DDG-001) is named after the original Midlothian, which covered civilian evacuations over Miridem and Adrastos despite the risk of being destroyed by the Covenant, these actions have earned her two Presidential Unit Citations and numerous other awards. She earned a third posthumously after she was lost over Algolis. The CEO of a Adrastos-based shipbuilding company whose family was saved by the Heart decided to honor the crew of this ship by naming the first class of guided missile destroyers after her. The Zumwalt-class has profile similar to the Halberd- and the Midlothian-class destroyers, except more heavily armored.