It was data gathered from Operation Calypso which detected Romulan fleet movement to the Orion Colonies that allowed a Starfleet taskforce to successfully engage the Romulan forces. (FASA RPG module: Star Fleet Intelligence Manual: Agent's Orientation Sourcebook) Two squadrons of Romulan cruisers that were on their way to Rigel were met at Prantares by a United Earth Starfleet force of approximately equal size, with around three dozen vessels participating in the engegament overall.
The Starfleet task force was led by Jonathan Archer and the Enterprise (NX-01). The battle itself only lasted 36 minutes and the conflict ended in a tactical draw and whilst the Starfleet suffered heavy casualities with only a handful of vessels remaining intact, they succeeded in turning the Romulan forces back. (FASA RPG module: The Romulan War; ENT - The Romulan War novel: To Brave the Storm)
- FASA RPG material states that the conflict was between the Federation and the Romulan Star Empire; but canon shows that during the Romulan War, there was no Federation. ENT novel: To Brave the Storm describes it as a battle fought between United Earth and Romulan Star Empire. There may be a connection with the Prantares Ribbon award.
|Battles of the Earth-Romulan War (2155-2160)|
|Prelude||Devastation of Coridan III • Battle of Draylax • Battle of Alpha Centauri • Battle of Calder II • Kobayashi Maru Incident|
|2155||Battle of Tarod IX • First Battle of Deneva • First Battle of Berengaria • Skirmish near Threllvia IV • Fall of Threllvia IV • First Battle of Altair VI|
|2156||Battle of Andoria • Invasion of Capory • Mission to Aeihk'aeleir Shipyard • Invasion of Draken IV • Second Battle of Berengaria • Battle of Algeron • Ambush in the Onias sector • Second Battle of Altair VI • Battle of Tau Ceti IV • Second Battle of Deneva|
|2157||Battle of Gamma Hydra • Battle of Galorndon Core • Battle of Prantares|
|2159||Search for the Seleya • Attack on Gravenor • Mission to Epsilon Theta • Mission to Encaria • Battle of Tyburn • Third Battle of Altair VI • Battle of Vorkado • Third Battle of Deneva • Battle of Beta Virginis • Battle of Delta Pavonis|
|2160||Battle of Tenebia • Devastation of Draylax • Attack on Sol • Battle of Cheron|