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Kesai nearby systems
Kesai nearby systems
(Map Legend)
System Information
X:Y Coordinates 370.161 : 105.677[e]
Spectral class A5II[1]
Recharge station(s) none[1]

Political Affiliation[edit]

Kesai IV[edit]

Kesai IV
Planetary flag
Planetary flag
System position 4th[1]
Jump point
22 days[1]
Highest native life no native life[1]
Reference Year 3025[1]
Ruler Duke of Kesai
HPG (Representative) B[1] (Precentor Reback Tyul) (3025)[1]

Kesai (aka Kasai) is a system on the border between the Federated Suns and the Draconis Combine near the Periphery. Its world Kesai IV is an infertile desert planet which is the site of a major Star League supply depot.

Planetary History[edit]

Kesai IV was settled after the discovery of several deposits of radioactive minerals. When the deposits proved to be smaller than expected, only few settlers remained. Thereafter the world was used as a prison planet until the Star League purchased the rights to use it as a depot for the SLDF from House Kurita.

The League quickly built a vast complex of warehouses, factories, maintenance facilities, and DropShip pads around the planet's sea and stationed troops there. During the Reunification War the site already served as assembly point for Operation UNION HOLD, the Star League invasion of the Outworlds Alliance. The 6th Royal Division, a part of II Corps, gathered here until they moved on to Niles in 2581.[5][41][42]

Although the SLDF stripped Kesai of most of its supplies prior to their departure to the Periphery, the remaining facilities and their inventory were still incredibly valuable for the Successor States. McKinnon's Company of the 2nd Battalion, 142nd Battle Regiment, 251st BattleMech Division was stationed here and refused to retreat. Instead they pledged their support for House Davion and defended the complex against a superior DCMS force in the First Battle of Kesai in December 2786.

Regardless of the outcome of the battle the world ultimately fell to House Kurita. Since then Kesai has been attacked countless times and most cities and forest burned down, resembling the surrounding wasteland. Nevertheless, the depot remained a major source of supplies for the DCMS and later the AFFS who captured the world during the Third Succession War.

In 3065 the Draconis Combine finally reconquered the planet in the course of their reprisal attacks for the Draconis March invasion during the FedCom Civil War.

Apocryphal Content Starts

The information after this notice comes from apocryphal sources; the canonicity of such information is uncertain.
Please view the reference page for information regarding their canonicity.

The database of the (apocryphal) 1989 video game MechWarrior, set around the year 3025, gives a population of 1.426 billion for Kesai IV and describes it as "Strategic military center and nothing else."

Apocryphal Content Ends


Kesai IV is a dry, barren world with a single sea. In the more temperate climate along the coasts forests are growing. The planet has only limited mineral resources and no native life.

Military Deployment[edit]




  • Eleventh Avalon Hussars RCT[45]






- At this point in time the unit operating at 75% of full strength, with 81% of their equipment featuring upgraded technology.


Map Gallery[edit]

Nearby Systems[edit]

Closest 32 systems (30 within 60 light-years)
Distance in light years, closest systems first:
Delacruz 7.8 Conroe 15.8 Groveld 18.5 Cimeron 23.0
Weisau 29.3 Capra 29.7 Niles 31.8 Latexo 34.0
Waldheim 34.2 Périgueux 36.0 Bryceland 37.3 Saumur 37.3
Altdorf 39.4 Colia 40.8 Valentina 45.3 Avranches 45.6
Damevang 48.1 Kaznejoy 48.8 Anguilla 49.3 McGehee 50.3
Bremond 50.4 Senorbi 50.6 Schirmeck 51.0 Wittington 54.0
Medron 54.7 Fallon 57.2 Budingen 57.6 Beta Mensae 58.0
Cassias 58.5 Sturgis 59.6 Delitzsch 60.0 Choudrant 60.2


Much of the information on this page is from The Fox's Teeth: Exploits of McKinnon's Raiders, which introduced the world (spelled as Kasai) as a planet belonging to the Federated Suns since the fall of the Star League in contrast to the more recent Handbook: House Davion. The existence of the Star League depot was confirmed in Historical: Reunification War, but it is unknown if the information about the beginnings of McKinnon's Raiders are still correct.


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 House Davion (The Federated Suns), p. 194: "Kesai"
  2. Handbook: House Kurita, p. 18: "Draconis Combine Founding" - [2319] Map
  3. Handbook: House Kurita, p. 31: "Draconis Combine after Age of War - [2571] Map"
  4. Handbook: House Davion, p. 48: "Federated Suns after Age of War - [2571] Map"
  5. 5.0 5.1 Historical: Reunification War, p. 106: "Reunification War: Outworlds Alliance Front Deployments (2581)"
  6. Historical: Reunification War, p. 159: "Inner Sphere - [2596] Map"
  7. Era Report: 2750, p. 37: "Inner Sphere - [2750] Map"
  8. Field Manual: SLDF, p. xi: "Inner Sphere - [2764] Map"
  9. Historical: Liberation of Terra Volume 1, p. 11: "Inner Sphere - [2765] Map"
  10. Handbook: House Kurita, p. 43: "Draconis Combine after First Succession War - [2822] Map"
  11. Handbook: House Davion, p. 54: "Federated Suns after First Succession War - [2822] Map"
  12. Historical: Liberation of Terra Volume 2, p. 122: "Inner Sphere - [2822] Map"
  13. Handbook: House Kurita, p. 53: "Draconis Combine after Second Succession War - [2864] Map"
  14. Handbook: House Davion, p. 60: "Federated Suns after Second Succession War - [2864] Map"
  15. House Davion (The Federated Suns): "Federated Suns Map - [3025] Map"
  16. Handbook: House Davion, p. 70: "Federated Suns after Third Succession War - [3025] Map"
  17. House Kurita (The Draconis Combine): "Draconis Combine Map - [3025]"
  18. Handbook: House Kurita, p. 64: "Draconis Combine after Third Succession War - [3025] Map"
  19. Handbook: House Davion, p. 71: "Federated Suns after Fourth Succession War - [3030] Map"
  20. Handbook: House Kurita, p. 66: "Draconis Combine after Fourth Succession War - [3030] Map"
  21. Handbook: House Davion, p. 76: "Federated Suns after War of 3039 - [3040] Map"
  22. Historical: War of 3039, p. 133: "Inner Sphere after War of 3039 - [3040] Map"
  23. Handbook: House Kurita, p. 68: "Draconis Combine after War of 3039 - [3040] Map"
  24. Era Report: 3052, p. 11: "Inner Sphere - [3050] Map"
  25. Era Report: 3052, p. 23: "Inner Sphere - [3052] Map"
  26. Handbook: House Kurita, p. 71: "Draconis Combine after Operation REVIVAL - [3052] Map"
  27. Era Report: 3062, p. 11: "Inner Sphere - [3057] Map"
  28. Handbook: House Davion, p. 78: "Federated Suns after Operation Guerrero - [3058] Map"
  29. Era Report: 3062, p. 29: "Inner Sphere - [3063] Map"
  30. Handbook: House Kurita, p. 74: "Draconis Combine after FedCom Civil War - [3067] Map"
  31. Handbook: House Davion, p. 82: "Federated Suns after FedCom Civil War - [3067] Map"
  32. Jihad: Final Reckoning, p. 42: "Inner Sphere - [3067] Map"
  33. Jihad Secrets: The Blake Documents, p. 65: "Inner Sphere - [3075] Map"
  34. Field Report: DCMS, p. 23: "Draconis Combine Mustered Soldiery Deployment Map - [August 3079]"
  35. Field Report: AFFS, p. 21: "Armed Forces of the Federated Suns Deployment Map - [August 3079]"
  36. Jihad: Final Reckoning, p. 63: "Inner Sphere - [3081] Map"
  37. Field Manual: 3085, p. 127: "Inner Sphere - [3085] Map"
  38. Era Report: 3145, p. 11: "Inner Sphere - [3135] Map"
  39. Era Report: 3145, p. 39: "Inner Sphere - [3145] Map"
  40. Field Manual: 3145, p. VI: "Inner Sphere - [3145] Map"
  41. Historical: Reunification War, p. 112: "First Strikes"
  42. Historical: Reunification War, p. 141: "Reunification War: Outworlds Alliance Front Deployments (2581)"
  43. House Davion (The Federated Suns), p. 135
  44. NAIS The Fourth Succession War Military Atlas Volume 1, p. 11: "Operation RAT"
  45. Historical: War of 3039, p. 135: "Deployment Table"
  46. Historical: War of 3039, p. 141: "Deployment Table"
  47. 20 Year Update, p. 20
  48. Field Manual: Federated Suns, p. 135
  49. Field Manual: Updates, p. 118
  50. Field Manual: 3085, p. 50: "DCMS Deployment Table - 3085"
  51. Field Manual: 3145, p. 65: "Draconis Combine Mustered Soldiery Deployment Table - 3145"