More like Special Duty

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Old Man's WarSeries
series16 books2005
Space opera.
“Sign a document at 65, saying you intend to join up 10 years later.”
from the catalogue
Start with Old Man's War →
Fallen DragonNovel
Peter F. Hamiltonstandalone novel2001
Space opera.
Catteni SequenceSeries
series5 books1970
completed
Space opera, about slavery and aliens.
“The Catteni series is a tetralogy of science fiction novels by American writer Anne McCaffrey.”
from the catalogue
Start with Freedom's Landing →
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, Ringworld, Fleet of Worlds
Cities in FlightSeries
series10 books1950
completed
Space opera.
“The stories cover roughly two thousand years, from the very near future to the end of the universe.”
from the catalogue
Start with They Shall Have Stars →
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, Mri Wars, Unionside, Era of Rapprochement, Hanan Rebellion, Age of Exploration