Earth-Romulan 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")
- Initial conflict involved full Coalition forces, but vulnerability of non-UE navies to Romulan telecapture led to withdrawal by late-2155 (ENT Novel: Beneath the Raptor's Wing)
- Prior aggression begun at first contact between United Earth and Romulan Star Empire
- Core forces:
- Allied forces:
- July 22, 2155: Attack on Alpha Centauri III, Calder II, Tarod IX (ENT Novel: Kobayashi Maru, Beneath the Raptor's Wing)
- October 16, 2155: Attack on Deneva (ENT Novel: Beneath the Raptor's Wing)
- Destruction of Deneva Colony
- Coalition losses: TSC Miracht; USS Yeager
- 2160: Official surrender of the Romulan Star Empire (ENT Novel: To Brave the Storm)
- 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")