Castle Federation

Castle Federation consists of six books. The current recommended reading order for the series is provided below.

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Speculative Fiction Books

(Castle Federation #1 / 6)
2015 | science fiction, military science fiction, space opera
(Castle Federation #2 / 6)
2015 | science fiction, military science fiction, space opera
(Castle Federation #3 / 6)
2016 | science fiction, military science fiction, space opera
(Castle Federation #4 / 6)
2016 | science fiction, military science fiction, space opera
(Castle Federation #5 / 6)
2017 | science fiction, military science fiction, space opera
(Castle Federation #6 / 6)
2017 | science fiction, military science fiction, space opera

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