It was intended as a 'Foreign Legion in Space' though Ewing was also inspired by Frank Herbert's short story The Tactful Saboteur which featured an alien with different cultural codes and so created the concepts of 'cho-ra' (obligation) and 'cho-ru' (counter-obligation).
It has always been intended to be two books, a 'cold war' and a 'hot war'.
- first series (art by Simon Davis)
- The Titanic Sails at Dawn (art by Mark Harrison)
- Darkness at the Break of Noon
- The Trail of the Dragon