More like There Will Be War

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Forever WarSeries
series10 books1972
Set in far future.
Start with Hero →
Ender's GameUniverse
universe39 books1977
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's Shadow, Ender Wiggin, First Formic War, Second Formic War, Fleet School
Known SpaceUniverse
universe142 books1964
About aliens, set in far future and other star systems.
“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
H. G. Wells' War of the WorldsUniverse
universe65 books1898
Alien invasion.
“No one would have believed, in the closing years of the nineteenth century, that human affairs were being watched keenly and closely from the timeless worlds of space.”
from the catalogue
Start with The War of the Worlds →
includes The War of the Worlds
Childe CycleSeries
series19 books1957
Set in far future and other star systems.
“The related short stories and novellas all center on the Dorsai, primarily members of the Graeme and Morgan families.”
from the catalogue
Start with Act of Creation →
ThistledownSeries
series5 books1978
completed
Hard science fiction, about space exploration, set in far future.
Start with The Wind from a Burning Woman →