Earth-Romulan War

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Before the War

  • Initial conflict considered as officially beginning July 22, 2155, upon destruction of Calder II science station and attacks on Alpha Centauri III and Tarod IX
    • Prior aggression begun at first contact between United Earth and Romulan Star Empire
      • April 17, 2152: First contact, unnamed system, collision by Enterprise NX-01 with cloaked Romulan minefield (ENT: "Minefield")
      • Mid-November 2154: Failed attempt at provoking strife between various Sol-local powers through covert attacks by telepresence drone technology (ENT: "Babel One", "United", "The Aenar")
      • February-May 2155: United Earth covert operations intended to derail Romulan warp 7 project (ENT: The Good That Men Do)
      • February 23, 2155: Warp suicide run by Romulan vessel on Coridan to cut off Coalition access to dilithium (ENT: The Good That Men Do)
      • July 15, 2155: Destruction of ECS Horizon during initial telecapture experiments (ENT Novel: Kobayashi Maru)
  • Conflict initially involved full Coalition forces, but vulnerability of non-UE navies to Romulan telecapture led to withdrawal by mid-2156; thus usually considered and referred to as the Earth-Romulan War (ENT Novel: Beneath the Raptor's Wing)
    • Though this was technically an abrogation of the Coalition Compact, no actions beyond attempts at exerting diplomatic pressure were taken in response (ENT Novel: Beneath the Raptor's Wing)
    • This withdrawal highlighted the weakness of the Coalition, leading to the formation of the Federation as a much stronger, more binding astropolitical entity following the end of the Earth-Romulan War

Core forces

Allied forces

United Earth

Major Events

July 22, 2155

  • First non-covert action against Earth/Coalition forces
  • Attack on Alpha Centauri III, Calder II, Tarod IX; attempt at capturing Enterprise NX-01 in Gamma Hydra Sector via telecapture technology through attack on SS Kobayashi Maru (ENT Novel: Kobayashi Maru, Beneath the Raptor's Wing)
  • Results
    • Destruction of Calder II science station, Tarod IX outpost, Alpha Centauri III fleet yards (ENT Novel: Beneath the Raptor's Wing)
    • Coalition losses: DDV T'Jal; DDV Toth (ENT Novel: Beneath the Raptor's Wing)

July 28, 2155

  • Construction begins on warp-field detection grids as developed by Vulcan intended to provide defense in lieu of direct Vulcan Defense Fleet involvement (ENT Novel: Beneath the Raptor's Wing)
    • Initial construction in core systems of Coalition member nations — Sol, Alpha Centauri, Kuy'va, Tellar — expanding to colonial holdings of all nations in the following months (ENT Novel: Beneath the Raptor's Wing)

October 16, 2155

  • First Battle of Deneva
  • First proof of failure of Vulcan warp detection grid (ENT Novel: Beneath the Raptor's Wing)
    • Later revealed to be through use of high-sublight attack vessels launched from outside detection perimeter (ENT Novel: Beneath the Raptor's Wing)
  • Forces
  • Results
    • Destruction of Deneva Colony and occupation of Deneva (ENT Novel: Beneath the Raptor's Wing)
    • Coalition losses: TSC Miracht; USS Yeager (ENT Novel: Beneath the Raptor's Wing)

November 8, 2155

  • First Battle of Berengaria VII
  • Forces
    • United Earth
    • Romulan Star Empire
  • Results
    • Destruction of Berengaria VII settlements (ENT Novel: Beneath the Raptor's Wing)
    • United Earth losses: Discovery NX-04 (ENT Novel: Beneath the Raptor's Wing)

November 17-18, 2155

  • Battle of Threllvia IV
  • Forces
  • Results
    • Destruction of Threllvia IV colony and occupation of Threllvia IV (ENT Novel: Beneath the Raptor's Wing)
    • Coalition losses: IGS Ka'Thelan Krotus (ENT Novel: Beneath the Raptor's Wing)

Late November 2155

  • Battle of Valakis
  • Conflict in open space near the planet Valakis (ENT Novel: Beneath the Raptor's Wing)
  • Forces
  • Results
    • Unknown number of casualties aboard USS Yorktown (ENT Novel: Beneath the Raptor's Wing)
    • Romulan vessel destroyed (ENT Novel: Beneath the Raptor's Wing)

November 26, 2155

  • Battle of Altair VI
  • First confirmed identification of Romulan sublight tactic (ENT Novel: Beneath the Raptor's Wing)
  • Forces
  • Results
    • Romulan attack on Altair VI repelled with no damage to colony (ENT Novel: Beneath the Raptor's Wing)
    • Romulan losses: 10-vessel sublight attack squadron (ENT Novel: Beneath the Raptor's Wing)

Late 2155 - Early 2156

  • Other unstated attacks implied (ENT Novel: Beneath the Raptor's Wing)

February 11, 2156

  • Romulan aggression wanes in response to preparation for second front at Haakona (ENT Novel: Beneath the Raptor's Wing)

March 8, 2156

  • Independent confirmation by Earth tests of viability of sublight assault tactic (ENT Novel: Beneath the Raptor's Wing)

March 10, 2156

  • Battle of Andor
  • Evolution of Romulan sublight tactic including disabling of detection grid during initial onslaught
  • Forces
  • Results
    • Attempted attack on Andorian capital cities prevented (ENT Novel: Beneath the Raptor's Wing)
      • Self-destruction of Challenger NX-03 while under telecapture control led to mutual destruction of IRW Dhivael (ENT Novel: Beneath the Raptor's Wing)

March 11, 2156

  • Invasion of Capory
  • Results
    • United Earth colony on Capory destroyed; no survivors (ENT Novel: Beneath the Raptor's Wing)

March 14, 2156

  • Invasion of Draken IV
  • Results
    • United Earth science station on Draken IV destroyed; no survivors (ENT Novel: Beneath the Raptor's Wing)

April 2, 2156

April-June 2156

  • Few offenses by Romulan Star Empire against Earth due to occupation with newly-belligerent Haakonan forces (ENT Novel: Beneath the Raptor's Wing)

June 17-20, 2156

  • Second Battle of Altair VI
  • United Earth task force rendezvouses with Andorian and Tellarite forces
  • Forces
    • Coalition
      • Endeavour NX-06
      • USS Cooper
      • USS Maryland
      • USS Montgomery
      • USS Tripoli
      • Additional United Earth forces (ENT Novel: Beneath the Raptor's Wing)
      • Numerous Andorian and Tellarite vessels (ENT Novel: Beneath the Raptor's Wing)
      • Estimate at least 25 vessels total, comprising ~10 United Earth ships, ~10 Andorian ships, ~5 Tellarite ships
        • "At least a dozen" vessel structures survived second attack in whole or in part, including all mentioned above, but "more than half" were Andorian or Tellarite; say closer to fifteen in total
        • In addition, "several Andorian warships" and "at least one...Tellarite vessel" self-destructed on telecapture
    • Romulan Star Empire
      • First fleet (ENT Novel: Beneath the Raptor's Wing)
      • Second fleet (ENT Novel: Beneath the Raptor's Wing)
  • June 17th: Surprise attack by Romulan patrol fleet during Coalition rendezvous
    • Attack repelled with some casualties, but forces a delay in fleet dispatch for repair
  • June 20th: Second attack by battle squadron alerted by initial patrol fleet
    • Majority of Coalition losses caused by second encounter
  • Results
    • Coalition losses: USS Montgomery, USS Tripoli, majority of Andorian and Tellarite vessels (ENT Novel: Beneath the Raptor's Wing)
    • Romulan losses: Total loss of all vessels (ENT Novel: Beneath the Raptor's Wing)
  • Attack is first clear and blatant evidence of greater ability of United Earth vessels to weather telecapture attacks than Andorian or Tellarite (ENT Novel: Beneath the Raptor's Wing)

June 20, 2156

  • Second Battle of Deneva
  • End result of continued push by United Earth task force from Berengaria VII to Deneva to retake planet from Romulan forces
  • Rendezvous of Coalition forces with United Earth task force immediately prior to offensive
  • Forces
  • Upon arrival, MACO dropships and shuttles launched from all United Earth vessels while fleet engaged Romulan forces in orbit (ENT Novel: Beneath the Raptor's Wing)
  • Total engagement under 12 hours (ENT Novel: Beneath the Raptor's Wing)
  • Results
    • Coalition losses: USS Kearsarge (NCC-154), USS Adirondack (NCC-157), USS Shepard (NCC-175), half of Andorian and Tellarite vessels crippled or destroyed; hundreds of MACO ground troops KIA (ENT Novel: Beneath the Raptor's Wing)
    • Romulan losses: Majority of forces lost, remainder forced into retreat (ENT Novel: Beneath the Raptor's Wing)
    • Deneva retaken by Coalition (ENT Novel: Beneath the Raptor's Wing)
  • Battle of Tau Ceti IV
  • Romulan forces stationed at Altair VI and Deneva, considered lesser holdings, diverted to Tau Ceti in advance of United Earth push (ENT Novel: Beneath the Raptor's Wing)
    • Tau Ceti seen as a more valuable target and potential beachhead (ENT Novel: Beneath the Raptor's Wing)
  • Forces
    • Coalition
      • Atlantis NX-05
      • Large combined Earth, Andorian, and Tellarite fleet similar in size to other task forces
    • Romulan Star Empire
      • Largest Romulan fleet in the war at that time (ENT Novel: Beneath the Raptor's Wing)
  • Results
    • Starfleet contingent losses near-total; Andorian and Tellarite contingents withdraw soon after engagements (ENT Novel: Beneath the Raptor's Wing)
    • Tau Ceti IV bombarded, occupied by Romulan forces (ENT Novel: Beneath the Raptor's Wing)

June 21, 2156

  • Andorian Empire and United Planets of Tellar withdraw from conflict against Romulan Star Empire (ENT Novel: Beneath the Raptor's Wing)
  • Romulan terrorist attack on Mount Seleya in response to Vulcan materiel aid to Haakona leads to the loss of the katra of Surak, cementing Vulcan's wavering non-interventionist stance (ENT Novel: Beneath the Raptor's Wing)
  • Prime Minister Samuels issues a preliminary executive order to prioritize defense of Sol over offensive strikes against Romulan forces upon withdrawal of Andor and Tellar from the front (ENT Novel: Beneath the Raptor's Wing)

August 16, 2156

  • Prime Minister Samuels' executive order is placed into law by the United Earth parliament, requiring the majority of Starfleet and MACO forces to pull back to defense of Sol (ENT Novel: To Brave the Storm)

Late 2156

  • Earth withdrawal combined with internal strife and redirection to the Haakonan front lead to a general quieting of the war (ENT Novel: To Brave the Storm)

January 2157

February 16, 2157

Mid-2157

August 22, 2157

  • Battle of Galorndon Core
  • Forces
  • Results
    • Romulan losses: IRW Raon (ENT Novel: To Brave the Storm)
    • Galorndon Core surface rendered uninhabitable by warp collision, IRW Raon (ENT Novel: To Brave the Storm)

November 10, 2157

  • Battle of Prantares
  • Earth Starfleet task force intercepted two Romulan squadrons enroute to Pi-3 Orionis to attempt annexation of Orion worlds (ENT Novel: To Brave the Storm)
  • Forces
    • United Earth
    • Romulan Star Empire
      • Approximately 24 Romulan vessels
  • Results
    • United Earth losses: Approximately 12 Earth Starfleet vessels (ENT Novel: To Brave the Storm)
    • Romulan losses: Total destruction of Romulan squadrons (ENT Novel: To Brave the Storm)

2158

  • Calder II recaptured from Romulan Star Empire
    • United Earth forward operating base for Romulan offensives assembled soon after (ENT Novel: To Brave the Storm)
  • Recapture presumptive by mention of base

November 21, 2159

Late November 2159

  • Third Battle of Deneva
  • Deneva colony lost to Romulan forces (ENT Novel: To Brave the Storm)
    • Colonists withdraw to orbital facilities, harrying occupying forces with mass bombardment to prevent any foothold (ENT Novel: A Choice of Futures)

December 2159 - January 2160

  • Series of United Earth losses to Romulan strikes (ENT Novel: To Brave the Storm)

February 4, 2160

  • Battle of Teneebia
  • United Earth/Draylax combined fleet fails to repel Romulan strike (ENT Novel: To Brave the Storm)

May 1, 2160

  • Attack on Draylax
  • Warp suicide run devastates Draylax surface, killing hundreds of millions and forcing withdrawal of Draylax from Coalition Accords and mutual defense pacts with United Earth (ENT Novel: To Brave the Storm)

May 3, 2160

  • Attack on Earth
  • Forces
    • United Earth
    • Romulan Star Empire
      • One-man nuclear-armed fighter craft
  • Stealth run by Romulan vessels hidden within Kuiper Belt bodies brought for Blue Horizon terraforming project (ENT Novel: To Brave the Storm)
  • Sol system patrol vessel USS Franklin Roosevelt (NCC-217), Iceberg 14 terraforming station destroyed prior to stealth run (ENT Novel: To Brave the Storm)
    • Escape pods and Iceberg 14 station booby trapped with atomic warheads to distract any follow-up investigation prior to strike (ENT Novel: To Brave the Storm)
  • Results
    • Majority of attack repelled by Enterprise NX-01 (ENT Novel: To Brave the Storm)
    • Madrid, Tunis struck by nuclear warheads (ENT Novel: To Brave the Storm)
    • Mars suffered multiple strikes (ENT Novel: To Brave the Storm)

July 29, 2160

  • Battle of Cheron
  • Final battle of Earth-Romulan War at the 83 Leonis system
  • Captain Jonathan Archer warned of fleet amassing at Cheron, but lack of independent verification led to expectation of warp 7 fleet, leading to distribution of majority of United Earth forces as Iota Horologii, 82 Eridani, Barradas, Yadalla, and Gamma Equulei (ENT Novel: To Brave the Storm)
  • Forces
  • Romulan fleet initially hid within mutual heliopause of 83 Leonis A and 83 Leonis B, taking advantage of mutual field lines to obscure sensors (ENT Novel: To Brave the Storm)
  • Location deduced by Captain Jonathan Archer, who lured fleet out while taking advantage of brief sensor recalibration during emergence from warp to reposition United Earth task force in Cheronian ionosphere (ENT Novel: To Brave the Storm)
  • Fleet engagement commenced shortly after (ENT Novel: To Brave the Storm)
  • Initial engagement led to loss of 13 United Earth vessels (ENT Novel: To Brave the Storm)
  • Delayed entry of Klingon/Andorian forces led to reduction of Romulan fleet strength to 38 vessels (ENT Novel: To Brave the Storm)
  • Cyberattack vector provided by Agent Charles Tucker aboard IRW Dabhae resulted in delay of fleet from further attack, including destruction of three damaged vessels (ENT Novel: To Brave the Storm)
  • Resumption of conflict led to quick destruction of 30 vessels from United Earth and allies, 6 Romulan vessels (ENT Novel: To Brave the Storm)
  • Late entry of Coalition armada repeled final surviving Romulan vessels, including destruction of prototype warp seven starship frameworks (ENT Novel: To Brave the Storm)
  • Results

November 9, 2160

  • Official surrender of the Romulan Star Empire with signing of the final treaty between that nation and United Earth (ENT Novel: To Brave the Storm)
    • Signing on the part of United Earth occurred at Earth Outpost 1 (ENT Novel: To Brave the Storm)
    • Signing on the part of the Romulan Star Empire occurred in Dartha City, Romulus (ENT Novel: To Brave the Storm)
    • Treaty officially known as the Armistice of 2160 (TTN Novel: Taking Wing)
    • Full text of treaty near one thousand pages (ENT Novel: To Brave the Storm)
      • Drafters included Ambassador Selina Rosen of United Earth, Senator D'tran of the Romulan Star Empire (VAN Novel: Open Secrets)
    • Signatories
      • Captain Jonathan Archer (ENT Novel: To Brave the Storm)
      • Praetor Karzan (ENT Novel: To Brave the Storm)
      • Ambassador T'Pau (ENT Novel: To Brave the Storm)
    • Treaty acts
      • Establishment of Romulan Neutral Zone (ENT Novel: To Brave the Storm; TOS: "Balance of Terror")
      • General withdrawal of Romulan diplomatic and military influence in surrounding space until mid-2260s (VAN Novel: Summon the Thunder; TOS: "Balance of Terror")
      • Prohibits the establishment of protectorates by either nation in the territory of the other (TTN Novel: Taking Wing)