This article is about the planetary system. For the WarShip, see Caledonia (Individual Commonwealth-class WarShip).

Caledonia 3151.svg
System Information
X:Y Coordinates-121.025 : 37.179[e]

The Caledonia system was home to at least one habitable world, also named either Caledonia or Caledon,[1] and as of 3145 was located in the Donegal Province of the Lyran Commonwealth.[2][3]

System Description[edit]

Caledonia is located near the Hesperus II and Lamon systems.[2][3]

System History[edit]

The Caledonia system was settled during or shortly after the First Exodus from Terra and was a part of the Federation of Skye when the Lyran Commonwealth formed in the mid-twenty-fourth century.[4]

Political Affiliation[edit]


Moons2 (Stirling, Bannochburn)[33]
Atmospheric pressureStandard (Breathable)[34]
History and Culture
Government and Infrastructure
Political LeaderGovernor
CapitalNew Edinburgh[33]
HPG ClassYes[36]

Caledonia is a temperate, Earth-like world with two moons: the "huge and silvery" Stirling and the "small and golden" Bannochburn.[33] The world is also often referred to as "Caledon"[1] which may be an expression for the planet as opposed to the system as a whole.

Planetary History[edit]

Caledon suffered heavy damage when the Draconis Combine conquered the planet in a seven-years campaign from 2841 through 2849 (destroying the defending Fourth Royal Guards in the process) and effectively scorched the planet. The world was slow to recover, and was subsequently ruled from offworld for over a century, first from Hesperus II and then from Tharkad.[37]

The settlers on Caledon cultivated their Scottish roots, including a heavy Scots burr, for centuries. Davis McCall was the estranged scion of a powerful family on Caledonia.

By the mid-thirty-first century, the capital city of New Edinburgh, which also featured a spaceport, was noted to have some 80-90,000 inhabitants.[38]

3056 Uprising[edit]

Around 3056, the Federated Commonwealth's governor on Caledon, Nelson Wilmarth, became a catalyst for an uprising. An outsider not native to Caledonia and unpopular to begin with, he was opposed by the planet's strong Jacobites movement and a sect called the Word of Jihad, a splinter sect of the Unfinished Book movement. Wilmarth gradually replaced the planetary militia with foreigners who were loyal only to him and by 3056 took to extreme measures including deploying BattleMechs against civilian protesters, torturing prisoners to death, and literally putting bodies and severed heads on display on stakes. Things came to a head when Davis McCall and Alexander Carlyle of the Gray Death Legion visited Caledonia and confronted Wilmarth at his citadel over imprisoning McCall's brother. The situation deteriorated to the point where McCall and Carlyle had to fight their way out (freeing some prisoners in the process) on 1 April 3056. On the same night they attacked the citadel with help from local resistance groups to free many prisoners. The Gray Death Legion proper was called in from Glengarry to restore order.

In truth, Wilmarth was manipulated by his military advisor Kellen Folker, who was part of a group of conspirators centered on Field Marshal Brandal Gareth. The entire situation was engineered to put the Gray Death Legion into a no-win situation by pitting them against those rising against Wilmarth's cruel and unlawful rule. Major Folker tried to suborn the unit when they arrived on Caledonia and ordered Grayson Carlyle to send his 'Mechs against the people. When Carlyle refused, Folker had him arrested but Carlyle was freed by his security detail and the Gray Death Legion subsequently restored order by vanquishing Wilmarth's forces and elements of Gareth's Third Davion Guards in the field in a final battle on 16 April. Both Wilmarth and Folker escaped.

The Jihad[edit]

On 30 September 3073, the infamous Word of Blake unit the Fifty-second Shadow Division struck at Caledonia, destroying the defending Twenty-second Skye Rangers.[39][40]

Military Deployment[edit]



  • Ninth Hesperus Guards[42]




Caledonia's local time is measured using the standard terran twenty-four hour clock, with an extra fifty-three minutes added after midnight.[46] Although this is not stated, the impression given for the planet is that of an Earth-like, open-environment world with a breathable atmosphere and plentiful arable soil.[34] CherryPicker AgroMechs are operated on Caledonia.[47]

Planetary Locations[edit]

  • Falkirk: town at the southern edge of the Grampian Mountains
  • Grampian Mountains
  • Mount Alba
  • New Edinburgh: the planetary capital city.[33]
  • Stirling: a city 1,000km north of New Edinburgh.[43]
  • Tanglewood

Companies and Industries[edit]

  • There is an AgroMech factory in New Edinburgh, possibly manufacturing the CherryPicker[48]

Map Gallery[edit]

Nearby Systems[edit]

Closest 36 systems (35 within 60 light-years)
Distance in light years, closest systems first:
Hesperus 9.9 Lamon 11.9 Vindemiatrix 23.3 Trent 23.6
Algorab 24.2 Carsphairn 24.9 New Kyoto 25.8 Fianna 26.3
Laiaka 26.6 Alkaid 28.7 Sarpsborg 29.1 Canonbie 30.0
Arganda 33.8 Zaniah 34.7 Rahne 34.9 Eidsfoss 39.1
Gladius 42.8 Gacrux 43.5 Furillo 44.2 Solaris 44.2
Seginus 46.4 Alcor 47.1 Clinton 47.9 Ciotat 50.1
Pardeau 51.1 Chaffee 52.0 Uhuru 52.8 Shiloh 53.4
Rochelle 53.5 Hyde 53.9 Laurieston 58.2 Kochab 58.5
Bjornlunda 58.8 Glengarry 59.5 Gniezno 59.6 Mariefred 60.3


  1. 1.0 1.1 Tactics of Duty, pp. 30, 36, 49, 52–54, 67, 117, 123, 139, 153, 160, 190, 202, 205, 212, 214, 221, 223, 250, 315
  2. 2.0 2.1 2.2 Era Report: 3145, p. 39, "Inner Sphere - 3145"
  3. 3.0 3.1 3.2 Field Manual: 3145, p. VI, "Inner Sphere - 3145"
  4. 4.0 4.1 4.2 Handbook: House Steiner, p. 13, "Federation of Skye world within the Lyran Commonwealth befor [2340] and after at their founding in [2341]"
  5. Handbook: House Marik, p. 16, "Free Worlds League Founding [2271]"
  6. Handbook: House Steiner, p. 25, "Lyran Commonwealth after Age of War [2571]"
  7. Historical: Reunification War, p. 159, "Inner Sphere Map [2596]"
  8. Era Report: 2750, p. 37, "Inner Sphere - 2750"
  9. Field Manual: SLDF, p. vii, "Inner Sphere - [2764] Map"
  10. Historical: Liberation of Terra Volume 1, p. 11, "Inner Sphere - 2765"
  11. First Succession War, pp. 24–25, "Inner Sphere - [2786] Map"
  12. Handbook: House Steiner, p. 36, "Lyran Commonwealth after First Succession War [2822]"
  13. Historical: Liberation of Terra Volume 2, p. 122–123, "Inner Sphere - [2822] Map"
  14. First Succession War, pp. 112–113, "Inner Sphere - [2822] Map"
  15. House Kurita (The Draconis Combine), p. 66, "Planet-Hopping and Sunstroke"
  16. Handbook: House Steiner, p. 40, "Lyran Commonwealth after Second Succession War [2822]"
  17. Handbook: House Steiner, p. 47, "Lyran Commonwealth after Third Succession War [3025]"
  18. Handbook: House Steiner, p. 56, "Lyran Commonwealth after Fourth Succession War [3030]"
  19. Handbook: House Steiner, p. 59, "Lyran Commonwealth after War of 39 [3040]"
  20. Historical: War of 3039, p. 132, "Inner Sphere - 3040"
  21. Era Report: 3052, p. 11, "Inner Sphere - 3050"
  22. Handbook: House Steiner, p. 61, "Lyran Commonwealth after Clan Invasion [3052]"
  23. Era Report: 3052, p. 23, "Inner Sphere - 3052"
  24. Era Report: 3062, p. 11, "Inner Sphere Map [3057]"
  25. Era Report: 3062, p. 29, "Inner Sphere Map [3063]"
  26. Handbook: House Steiner, p. 70, "Lyran Commonwealth after FedCom Civil War [3067]"
  27. Jihad: Final Reckoning, p. 43, "Inner Sphere Map - [October 3067]"
  28. Jihad Secrets: The Blake Documents, p. 64, "Inner Sphere [3075]"
  29. Field Report: LAAF, p. 21, "Lyran Alliance Armed Forces Deployment Map - August 3079"
  30. Jihad: Final Reckoning, p. 63, "Inner Sphere Map - [March 3081]"
  31. Field Manual: 3085, p. vii, "Inner Sphere Map - [October 3085]"
  32. Era Report: 3145, p. 10, "Inner Sphere - 3135"
  33. 33.0 33.1 33.2 33.3 Tactics of Duty, p. 29
  34. 34.0 34.1 implied, as Tactics of Duty describes it as a habitable open environment
  35. Mercenary's Star, ch. 4
  36. Tactics of Duty
  37. Tactics of Duty, p. 49
  38. Tactics of Duty, p. 33
  39. Jihad Hot Spots: 3076, p. 34, "Timeline of the Jihad"
  40. Jihad: Final Reckoning, p. 52, "The Jihad In Review"
  41. Field Report 2765: LCAF, p. 12: "Hesperus Guards" - Regimental Status
  42. First Succession War, p. 139: "First Succession War Deployment Table - LCAF"
  43. 43.0 43.1 "Tactics of Duty", ch. 21
  44. "Tactics of Duty", ch. 11
  45. Field Manual: 3145, p. 133: "Lyran Commonwealth Armed Forces - Donegal Province"
  46. Tactics of Duty, pp. 117–118
  47. Tactics of Duty, p. 234
  48. Tactics of Duty, ch. 14