More like Into the Battle

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Old Man's WarSeries
series16 books2005
Science fiction and military science fiction, adventurous in tone, about war, set in far future and space.
“Sign a document at 65, saying you intend to join up 10 years later.”
from the catalogue
Start with Old Man's War →
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 Ringworld, Man-Kzin Wars, Fleet of Worlds
HonorverseUniverse
universe83 books1993
Science fiction and space opera, set in far future and other star systems.
“At the center stands one officer, Honor Harrington — captain, then something far larger — and the six-limbed empathic treecat who rides her shoulder.”
from the catalogue
Start with On Basilisk Station →
includes Saganami Island, Honor Harrington, Worlds of Honor anthologies, Wages of Sin, Manticore Ascendant, Star Kingdom (Honor Harrington), Expanded Honorverse, Honor Harrington Universe short fiction
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, Falkenberg's Legion, War World, Laurie Jo Hansen
The Lost FleetUniverse
universe27 books2006
Science fiction and space opera, set in far future and space.
“A war a hundred years old has forgotten how to fight it.”
from the catalogue
Start with Dauntless →
includes The Genesis Fleet, The Lost Stars, Beyond the Frontier, Outlands (The Lost Fleet)
UpliftUniverse
universe13 books1980
About uplift and aliens.
“No species, the Galactics insist, ever climbs to sapience alone.”
from the catalogue
Start with Sundiver →
includes Uplift, Uplift Storm