The Manticoran Alliance and its neighborhood in an early state (without Erewhon and the Andermani Empire)

The Manticoran Alliance was a coalition of star nations neighboring the People's Republic of Haven, united under a defensive treaty established in the early 1900s PD. The Star Kingdom of Manticore initiated discussions toward such an alliance, and was its the strongest member, hence the commonly used name. Despite the fact that most other Alliance members were militarily weak when the Alliance was established, Manticore gained some strategical depth against Haven as well as broader basing possibilities.

The Alliance began in 1903 PD, with the Treaty of Alliance between Manticore and the Protectorate of Grayson.[1]


Known members of the Manticoran Alliance were:

In 1900 PD prospective minor Alliance members were in poor economic condition. Half of the Star Kingdom's allies were monarchies and boasted open, hereditary aristocracies. That's why Havenite propaganda called the smaller Alliance members "puppet regimes" of Manticore, a larger hereditary monarchy[7]. (HH1, HH2, HH8, HH9)

Alliance space[]

Before the war, the RMN established some stations and bases in the border space, besides systems belonging directly to members star nations. There were also some systems described as Alliance space, but it is not certain, if these systems belonged to any minor star nation.

See: Alliance Space

Treaty of Alliance[]

Probably there were several treaties of alliance or accession treaties signed with each Alliance member[8]. It seems that a common part of those treaties was the Manticoran Alliance Charter. Some provisions refered to in books[9] were as follows:

  • The mutual defense clauses (HH10)
  • Member systems defense responsibility provisions[10]
  • Provisions concerning wormholes:
    • The general wormholes transfers provisions included in the Article XII of the Manticoran Alliance Charter: any treaty partner had free, unlimited and unrestricted access to the Manticore Wormhole Junction for all its warships; a formal notification of that intention was necessary.[11]
    • Unannounced, emergency transits took absolute priority over all routine traffic.
    • Transit instructions were to be obtained from Astro Control Service[12]
    • Wormholes termini defense provisions[13]

The letter of the treaties didn't forbid separate negotiations with hostile parties, which was exercised by the Manticoran government in 1915 PD. (HH9)

Allied forces[]

Probably not all Alliance members possesed navies[14]. Before the war the Star Kingdom of Manticore provided them with obsolete Highlander-class LACs. (JIR1)


The allied offensive forces, mainly Eighth Fleet, comprised of Manticoran, and, later, Grayson, Erewhonese and Andermani warships. Minor allied navies' duty generally was their home systems' defense[15]. (HH7, HH8, HH11, infodump)

Known allied navies[]

Joint organizations[]


  1. It included military clauses as well as economic provisions, signed by Captain Harrington on the Manticoran side at the request of the Protector. (HH2, HH10)
  2. Commodore Mark Sarnow talked Alizon into signing up with the Alliance. (HH3)
  3. member of the Alliance from the beginning of the war (HH9-HH11), but not earlier, than Havenite StateSec presence during Silvestria affairs was revealed. (HHA2:DLS)
  4. While Talbott Quadrant affairs were detached from most events of the Second Havenite-Manticoran War area, both the Star Kingdom of Manticore and the Talbott Quadrant constituted a single Federal state with a common Monarch, Parliament, foreign policy, commercial entity, and naval forces
  5. Yorik was not nearly as critical as other Alliance systems. (HH3)
  6. As the Alliance Space - HH3. Refered as inhabited world in 1433 PD - MA1.
  7. The People's Republic of Haven supported at least one subversive group in the Alliance space
  8. Prime Minister High Ridge redered plural treaties in HH9, one of tem could be the treaty of alliance between the Star Kingdom of Manticore and the Grayson Protectorate
  9. There were also some details concerning bilateral military and economic agreement between Manticore and Grayson in 1903 PD (HH3), as well as similar details concerning Sidemore (HH10). It is possible Hauptman Cartel based its yard investitions in the Zanzaibar and Alizon System on similar agreements.
  10. Zanzibar and Alizon mentioned in HH11 - the treaty of alliance specifically assigned command authority concerned with Zanzibar system defense to the Zanzibaran System Navy
  11. Article XII, Section 7, paragraph (c)
  12. Probably as well as from its Erewhonese counterpart in case of the Erewhon Junction, according to Article V of the Treaty of Alliance between Mantcore and Grayson.
  13. When the Republic of Erewhon was the member of the Alliance, it had the official primary responsibility for the Hennessy Terminus.
  14. eg. the Poicters System (HH3)
  15. the only known exception being light forces of the Casca Navy, believed to have operated in the Micah System as screen for the light RMN task force in 1911 PD

External links[]

David Weber's posts on infodump: