Dominion War

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Before the War

  • Initial conflict occurred July 30, 2373 upon entry of Cardassian Union into the Dominion (DS9: "By Inferno's Light")
    • Prior to official beginning of hostilities, explicit illicit actions against Alpha Quadrant forces by the Dominion had been occurring since first contact, 2370
      • December 31, 2370: Official first contact, destruction of USS Odyssey (DS9: "The Jem'Hadar")
      • October 2371: Decimation of Tal Shiar and Obsidian Order (DS9: "The Die is Cast")
      • Mid-December 2371: Attempt on instigating new Federation/Tzenkethi War 2371 (DS9: "The Adversary")
      • Early 2372: Instigation of Federation-Klingon War 2372
      • May 2372: Instigation of attempted Starfleet coup (DS9: "Homefront", "Paradise Lost")

Core forces

Starfleet Fleets

Tenth Fleet

  • Commanded by Admiral Masc (TNG Novel: A Time for War, A Time for Peace)
  • By September 2374: Assigned to Betazed Sector (DS9: "In the Pale Moonlight")

Twelfth Fleet

Major Events

September 7, 2374

First Battle of Betazed

  • Betazed struck by Jem'Hadar fleet while Tenth Fleet on a training exercise (DS9: "In the Pale Moonlight")
  • Fleet repelled, planetary defenses destroyed, and planet occupied within hours of strike (DS9: "In the Pale Moonlight")

Late December 2374

Battle of Rigel

  • Forces
    • Alpha Quadrant alliance
    • Dominion
  • Federation task force defended Raij system against Dominion attack (TNG Novel: The Battle of Betazed; S31 Novel: Abyss)
  • Four vessels lost (TNG Novel: The Battle of Betazed)
  • One week before Battle of Starbase 19

Massacre of New Beijing

  • Forces
    • Dominion
      • Two squadrons of Jem'Hadar soldiers (S31 Novel: Abyss)
  • Considered one of the worst massacres of the war (S31 Novel: Abyss)
  • Official death toll of 5,000 (S31 Novel: Abyss)
    • True death toll much higher (S31 Novel: Abyss)
  • Simultaneous with Battle of Rigel

December 29, 2374

First Battle of Chin'toka

  • Forces
    • Alpha Quadrant alliance (DS9: "Tears of the Prophets")
    • Dominion
      • 5 attack squadrons of at least 16 vessels each (DS9: "Tears of the Prophets")
      • Hundreds of automated weapons platforms (DS9: "Tears of the Prophets")

Early January 2375

Battle of Starbase 19

  • Forces
    • Alpha Quadrant alliance (TNG Novel: The Battle of Betazed)
      • Starbase 19 (TNG Novel: The Battle of Betazed)
      • Twelfth Fleet (TNG Novel: The Battle of Betazed)
  • Dominion
    • Large number of Dominion vessels (TNG Novel: The Battle of Betazed)
  • Preemptive strike from Jem'Hadar forces to prevent attempt at retaking Betazed system (TNG Novel: The Battle of Betazed)
  • Results
    • Starbase 19 lost, along with 36 vessels in the Twelfth Fleet (TNG Novel: The Battle of Betazed)
      • Casualties in the thousands (TNG Novel: The Battle of Betazed)
    • All but one dozen Dominion vessels remaining to defend Betazed (TNG Novel: The Battle of Betazed)
  • Four months after First Battle of Betazed

Second Battle of Betazed

  • Forces
  • Covert team infiltrated Sentok Nor, destroying it via access of auto-destruct system (TNG Novel: The Battle of Betazed)
  • Starfleet task force occupied Dominion fleet, while second covert team on Darona retrieved Hent Tevren to access his psionic talents (TNG Novel: The Battle of Betazed)
  • Analysis of results of Crell Moset's attempts to form telepathic Jem'Hadar led to revelation that Jem'Hadar were vulnerable to emotional overload (TNG Novel: The Battle of Betazed)
  • Rather than homicidal technique, Tevren's emotional projection techniques were disseminated and used instead to disable Jem'Hadar, allowing capture of occupying Dominion forces (TNG Novel: The Battle of Betazed)
  • Results
    • Alpha Quadrant alliance: Loss of USS Katana, 1200 Betazoid resistance members (TNG Novel: The Battle of Betazed)
    • Dominion: Loss of all vessels and Sentok Nor; Betazed occupying forces taken prisoner by Federation (TNG Novel: The Battle of Betazed)

April 7, 2375

Battle of Ricktor Prime

  • Forces
  • Alpha Quadrant task force defended Ricktor Prime against Dominion fleet (TNG Short Story: "Four Lights")
  • Initial engagement resulted in loss of USS Winchester, unnamed Galor-class vessel (TNG Short Story: "Four Lights")
  • USS Grissom, USS Christopher, CDS Elokar disabled shortly after (TNG Short Story: "Four Lights")
  • Unnamed Jem'Hadar vessel destroyed via redirection of ejected warp core of CDS Elokar (TNG Short Story: "Four Lights")
  • Two remaining Jem'Hadar vessels engaged in suicide strike, leading to destruction of USS Vaklar, IKS Kortir, IKS Worvig (TNG Short Story: "Four Lights")
  • Remaining Jem'Hadar vessel escaped (TNG Short Story: "Four Lights")
  • Results

August 11, 2375

Attack on Earth


Battle of Rashanar

  • Forces
  • Dominion force attempted attack on Ona (TNG Novel: A Time to Die)
  • Attack repelled by Alpha Quadrant alliance forces (TNG Novel: A Time to Die)
  • All involved vessels destroyed (TNG Novel: A Time to Be Born)
    • Cause for total destruction of both fleets unknown until further investigation, mid-2378 (TNG Novel: A Time to Be Born)
    • Remains held in place through to 2378 due to formation of gravitational field via rift to antimatter universe (TNG Novel: A Time to Be Born, A Time to Die)
    • Hazards of field included antimatter asteroid composed of stray antimatter released from rift (TNG Novel: A Time to Be Born, A Time to Die)

December 31, 2375

  • Official surrender of the Dominion (DS9: "What You Leave Behind")
    • Withdrawal of Dominion forces from the Alpha Quadrant proceeded shortly thereafter