revealed in Mission of Honor to be part of a secret cabal of about a dozen highly capable planets that are busily building a secret navy using advanced technologies at a secret planet and known to itself as the Mesan Alignment. The Mesan Alignment's navy has new technology and conducts a sneak attack on Manticore in 1922 PD during the twelfth mainline novel, Mission of Honor. The Mesans have a 600-year-old secret program to reinstitute purposeful genetic engineering of humans and break up the Solarian League, while taking down all opponents opposing such genetic engineering. This makes the staunchly anti-genetic-slavery star nations of Haven, Manticore, and various associates of the planet Beowulf primary targets of the Mesan Alignment. The "Crown of Slaves" sub-series books and last two mainline Honorverse novels detail the rising extent of this threat. As the two sub-series progress, albeit with somewhat-separate casts of characters, each is expected by Weber to carry the detailed storyline events particular to their astrographical region forward and tie together into an ongoing plotline concerning the massive and monolithic Solarian League, which foreshadowing in the most recent novels suggests is about to undergo severe disruption. The thirteenth mainline novel, A Rising Thunder, ties together events in both sub-series and synchronizes the timeline of each sub-series with Honor Harrington's mainline novels. This book confirms the Solarian League is officially now the new Mesan cat's paw, effectively at war with both the Star Empire of Manticore and the Republic of Haven, as it has been manipulated into error after error by the operatives of the Mesan Alignment. Setting Among a handful of anthologies, the thirteen Honor-centered novels, and two subordinate sub-series starring some different characters, the universe first explored in On Basilisk Station has a diasporal historical background for the backstory storyline, in which mankind, over almost two millennia, migrated to systems beyond the Sol system, first in slower-than-light starships, then by increasingly efficient and effective hyperspace drive-propulsion systems. Early daughter colonies also spawned colonies, forming regional networks of related populations. With travel limited to slower-than-light speeds, any marginally habitable nearby planet was of interest, and Earth's scientists went through a period in which they regularly genetically modified the human genome for survival positive adaptations to marginal environments, such as heavy gravity, thin atmosphere, thick atmospheres, or toxic environments (e.g. Grayson). Some corporate entities also began breeding for super soldiers and superior intellects, good