AuthorPingHome › Finished and dormant series › Castle Federation
Castle Federation · Glynn Stewart
Castle Federation books in order
There are 9 books in Castle Federation. The latest, Unbroken Faith, came out in 2023, and Glynn Stewart hasn't announced another one yet.
Be the first to know if there's ever a new Castle Federation book
AuthorPing notifies you when a series or author you love has a new book coming out and shows a countdown to every release. Free on iPhone and Android.
Coming very soon to iPhone and Android.
Release information last checked 26 October 2026.
Castle Federation books in order
2015Book 1Space Carrier Avalon
2015Book 2Stellar Fox
2016Book 3Battle Group Avalon
2016Book 4Q-Ship Chameleon
2017Book 5Rimward Stars
2017Book 6Operation Medusa
2022Book 7Admiral's Oath
2022Book 8To Stand Defiant
2023Book 9Unbroken Faith
Companion stories
2020CompanionA Question of Faith
What Castle Federation is about
From the description of Space Carrier Avalon, the first book.
When the Castle Federation deployed the first starfighters, they revolutionized war and drove the Terran Commonwealth from their space. The first of the carriers for those deadly strike craft was Avalon, a legend that turned the tide of a dozen battles. That was decades ago. Now Avalon is obsolete, a backwater posting—but still a legend to the Federation and her allies and enemies alike. Wing Commander Kyle Roberts and a cadre of officers are sent aboard the old carrier to take her on a final tour along the frontier. Aboard, Roberts finds outdated fighters, broken pilots…and key subordinates who just might be traitors. He and the others will get Avalon ready for war once more regardless. Show tour or not, the old enemy has been seen near the border and no matter what, when the call comes, Avalon will answer!
Castle Federation at a glance
- Author
- Glynn Stewart
- Books published
- 9
- Companion stories
- 1
- Still to come
- None announced yet
- First book published
- 2015
Questions readers ask
Is there going to be another Castle Federation book?
Glynn Stewart hasn't announced one yet. If a new Castle Federation book is announced, AuthorPing will let you know.
How many books are in Castle Federation?
9 books have been published in Castle Federation so far, plus 1 companion story.
What order should I read Castle Federation in?
Read the main books in order: 1. Space Carrier Avalon, 2. Stellar Fox, 3. Battle Group Avalon, 4. Q-Ship Chameleon, 5. Rimward Stars, 6. Operation Medusa, 7. Admiral's Oath, 8. To Stand Defiant, 9. Unbroken Faith. The 1 companion can be read alongside them.
Is Castle Federation finished?
Glynn Stewart hasn't announced another Castle Federation book, so it may be finished. Series do come back, though, and AuthorPing will let you know if a new one is announced.
How will I know when the next Castle Federation book is announced?
Follow Castle Federation in AuthorPing, a free app for iPhone and Android. AuthorPing notifies you when a series or author you love has a new book coming out and shows a countdown to every release.
More from Glynn Stewart
Never miss a release from the series you love
Follow Castle Federation and every other series you read. AuthorPing notifies you when a series or author you love has a new book coming out and shows a countdown to every release. Free, no account needed.
Coming very soon to iPhone and Android.