Order of Alliance-Union Books

C.J. Cherryh's Alliance-Union Universe encompasses a compelling collection of science fiction novels that blend elements of space opera with hard science fiction. Set in a future where the Sol Corporation has privatized space stations built at increasing distances from Earth, the series explores how isolated human settlements gradually forge distinct cultural identities. This cultural evolution creates mounting friction, ultimately leading some colonists to sever ties with the Earth Company and develop a clone-based military force, sparking an interstellar conflict between the Company and the breakaway Union.

Launched in 1978 with Kesrith, this ongoing series offers remarkable reading flexibility – most novels can be enjoyed independently, with only two specific sequences requiring order: Heavy Time must precede Hellburner, and Cyteen should be read before Regenesis. The Alliance-Union Universe extends beyond the core series to encompass several of Cherryh's other works, including the Hanan Rebellion, Chanur, Merovingen Nights, and Morgaine series. The following list presents the main sequence Alliance-Union novels arranged by publication date, with chronological ordering applied where needed: