More like Retreat Hell

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Old Man's WarSeries
series16 books2005
Space opera, adventurous in tone.
“Sign a document at 65, saying you intend to join up 10 years later.”
from the catalogue
Start with Old Man's War →
Alliance-UnionUniverse
universe173 books1976
Science fiction, set in far future.
“Around that spine cluster the merchanter novels of trader Families, the Faded Sun trilogy of human envoys among the martial alien Mri, and the Chanur books, narrated from the hierarchical, whiskered viewpoint of the hani.”
from the catalogue
Start with Heavy Time →
includes Company Wars, Chanur, The Hinder Stars, Era of Rapprochement, Mri Wars, Unionside, Hanan Rebellion, Age of Exploration
Known SpaceUniverse
universe142 books1964
About aliens.
“Give a clever species a few centuries and a working fusion drive, and it will fill the sky with problems.”
from the catalogue
Start with Ringworld →
includes Man-Kzin Wars, Fleet of Worlds, Ringworld
CoDominiumUniverse
universe98 books1971
Science fiction and military science fiction, set in other star systems and far future.
“The body of work runs along a few hard threads rather than one line.”
from the catalogue
Start with The Mote in God's Eye →
includes Moties, Falkenberg's Legion, War World, Laurie Jo Hansen
Fallen DragonNovel
Peter F. Hamiltonstandalone novel2001
Space opera, adventurous in tone.
EmbeddedNovel
Dan Abnettstandalone novel2011
“The colony planet of Eighty-Six looks as dull as all its fellow new worlds to veteran journalist Lex Falk.”
from the catalogue