More like Border Wars

anchored on:science fictionfar futuremilitary science fictionspaceother star systems

but

Narrow

Old Man's WarSeries
series16 books2005
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 →
Ender's GameUniverse
universe39 books1977
Science fiction, set in far future.
“To beat your enemy you must first understand him so completely that you love him — and in the instant you love him, you destroy him.”
from the catalogue
Start with Ender's Game →
includes Ender Wiggin, Ender's Shadow, First Formic War, Second Formic War, Fleet School
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 far future and other star systems.
“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, War World, Falkenberg's Legion, Laurie Jo Hansen
UpliftUniverse
universe13 books1980
Adventurous in tone, about uplift and aliens.
“No species, the Galactics insist, ever climbs to sapience alone.”
from the catalogue
Start with Sundiver →
includes Uplift, Uplift Storm
ConfederationUniverse
universe19 books1991
Science fiction and space opera, set in far future and space.
“In the twenty-seventh century humanity has spilled across nearly nine hundred star systems and calls the loose weave that binds them the Confederation.”
from the catalogue
Start with The Reality Dysfunction →
includes Night's Dawn Trilogy, Confederation Universe Stories