18 books in series

Expeditionary Force

Expeditionary Force is a 22-book series with 18 released primary works first released in 2016 with contributions by Craig Alanson.

Columbus Day
SpecOps
Paradise
Trouble on Paradise
Black Ops
Zero Hour
Mavericks
Renegades
Deathtrap
Homefront
Armageddon
Valkyrie
Freefall
Critical Mass
Brushfire
Breakaway
Fallout
Match Game
Failure Mode
Aftermath
Task Force Hammer
Gateway