More like So Fight I

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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
Starship TroopersNovel
Robert A. Heinleinstandalone novel1959
About coming of age and aliens.
Old Man's WarSeries
series16 books2005
Military science fiction and 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 →
HonorverseUniverse
universe83 books1993
Military science fiction and science fiction, 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 Honor Harrington, Saganami Island, Worlds of Honor anthologies, Wages of Sin, Manticore Ascendant, Expanded Honorverse, Honor Harrington Universe short fiction, Star Kingdom (Honor Harrington)
Forever WarSeries
series10 books1972
Military science fiction and science fiction, set in far future and space.
Start with Hero →
VattaUniverse
universe10 books2003
Military science fiction and science fiction, adventurous and tense in tone, set in far future and space.
“Get kicked out of the Academy and the family still hands you a ship.”
from the catalogue
Start with Trading in Danger →
includes Vatta's War, Vatta's Peace