BattleTech eras

(Redirected from Early Spaceflight)

Catalyst Game Labs, the current owners of BattleTech, have divided history into six eras. The products they released are grouped in this manner. Recently newer products have included other distinct time periods by splitting the eras into sub-eras which brings the classification up to nine eras. In addition to those, four more distinct non-canon ones can be identified:[1]

Era Sub Era Years Description Symbol[2]
Pre-Spaceflight Before 1950 Earliest era referenced, when humanity only resides on its planet of origin, Terra.
Early Spaceflight 19502005 Early solar system restricted spaceflight.
Age of War Age of War (First Exodus)[3] 20052242 The time of the Western Alliance, early Terran Alliance, and earliest interstellar colonies. The Outer Reaches Rebellion resulted in the Demarcation Declaration, the forced independence for most colonies. Star league era-BW.jpg
Age of War Age of War (Second Exodus)[4] 22422398 Colonists on marginal worlds resettle or perish. The Terran Alliance collapses; the beginnings of the Terran Hegemony and the Great Houses of the Inner Sphere. Star league era-BW.jpg
Age of War Age of War 23982570[5] The time of the Terran Hegemony and "civilized" warfare between the Inner Sphere houses. The first BattleMech is created. Star league era-BW.jpg
Star League Star League 25712781 The time when the Star League reached the height of its power and was destroyed by the Amaris Coup. Star league era-BW.jpg
Succession Wars Early Succession Wars 27812900 The start of the Succession Wars, when the Successor States of the Great Houses vied for supremacy after the collapse of the Star League. Succession wars era-BW.jpg
Succession Wars Late Succession Wars 29013049 After years of war, many of the advances of the Star League had disappeared, becoming LosTech. Warfare between the Successor States ground down to low-level fighting. Succession wars era-BW.jpg
Clan Invasion 30503061 The time between the beginning of the Clan Invasion and the Inner Sphere's victory at the Great Refusal. Clan invasion era-BW.jpg
Civil War 30623067 The years in the shadow of the Federated Commonwealth Civil War. Civil war era-BW.jpg
Jihad 30683080 The time when the Word of Blake unleashed its Jihad. Jihad era-BW.jpg
Dark Age Formation of The Republic 30813130 The time from the defeat of the Blakists to the creation of The Republic of the Sphere.[6] Dark age era-BW.jpg
Dark Age Dark Age 31313150 The time since the collapse of the HPG network caused political chaos in The Republic of the Sphere that led to the militarization of Industrial Mechs and other civilian equipment. Dark age era-BW.jpg
IlClan IlClan 3151 The once-invulnerable Republic of the Sphere lies in ruins, torn apart by the Great Houses and the Clans. As Fortress Republic collapses, the Clans race toward Terra to create a supreme authority which will rule the Inner Sphere by any means necessary.[7] ILClan Era.jpg


  1. Master Unit List: Battle Value, p. 2: "Era Legend"
  2. Catalyst Game Labs: "Classic BattleTech Eras"
  3. The Periphery, p. 12: "First Exodus"
  4. The Periphery, p. 14-19: "Beyond the Farthest Star" & "Inner Sphere Politics"
  5. Strategic Operations, p. 167: "Faction Quality Table"
  6. Catalyst Game Labs' forum: "Topic: The Republic era?"
  7. Record Sheets: Clan Invasion, p. 4: "Battletech Eras"