11 books in series

Childe Cycle

Childe Cycle is a 13-book series with 11 released primary works first released in 1960 with contributions by Gordon R. Dickson and David W. Wixon.

Dorsai!
Negromante
Soldier, Ask Not
Tactics Of Mistake
Spirit of Dorsai
Lost Dorsai
The Final Encyclopedia
L'Enciclopedia Finale - 1º
L'Enciclopedia Finale - 2°
The Chantry Guild
Young Bleys
Antagonist
The Star Road