Kindle
$5.99
Available instantly
Audible Logo Audiobook
$0.00
with membership trial
Hardcover
$17.00
Mass Market Paperback
$1.99
Buy new:
-35% $17.00
FREE delivery Friday, May 10 on orders shipped by Amazon over $35
Ships from: Amazon
Sold by: WITCH BOOKS
$17.00 with 35 percent savings
List Price: $26.00

The List Price is the suggested retail price of a new product as provided by a manufacturer, supplier, or seller. Except for books, Amazon will display a List Price if the product was purchased by customers on Amazon or offered by other retailers at or above the List Price in at least the past 90 days. List prices may not necessarily reflect the product's prevailing market price.
Learn more
Get Fast, Free Shipping with Amazon Prime FREE Returns
FREE delivery Friday, May 10 on orders shipped by Amazon over $35
Or fastest delivery Wednesday, May 8. Order within 19 hrs 13 mins
Only 1 left in stock - order soon.
$$17.00 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$17.00
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon
Ships from
Amazon
Sold by
WITCH BOOKS
Sold by
WITCH BOOKS
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Payment
Secure transaction
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
$12.23
Get Fast, Free Shipping with Amazon Prime FREE Returns
This item shows wear including moderate wear to edges and cover. This item shows wear including moderate wear to edges and cover. See less
FREE delivery Monday, May 13 on orders shipped by Amazon over $35
Or fastest delivery Wednesday, May 8. Order within 19 hrs 13 mins
Only 1 left in stock - order soon.
$$17.00 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$17.00
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Access codes and supplements are not guaranteed with used items.
Amazon book clubs early access
Loading your book clubs
There was a problem loading your book clubs. Please try again.
Not in a club? Learn more
Amazon book clubs early access

Join or create book clubs

Choose books together

Track your books
Bring your club to Amazon Book Clubs, start a new book club and invite your friends to join, or find a club that’s right for you for free.
Explore Amazon Book Clubs
Kindle app logo image

Download the free Kindle app and start reading Kindle books instantly on your smartphone, tablet, or computer - no Kindle device required.

Read instantly on your browser with Kindle for Web.

Using your mobile phone camera - scan the code below and download the Kindle app.

QR code to download the Kindle App

Follow the author

John Ringo
Follow
Something went wrong. Please try your request again later.

Citadel Hardcover – January 4, 2011

by John Ringo (Author)
4.7 4.7 out of 5 stars 1,739 ratings
See all formats and editions
{"desktop_buybox_group_1":[{"displayPrice":"$17.00","priceAmount":17.00,"currencySymbol":"$","integerValue":"17","decimalSeparator":".","fractionalValue":"00","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"S3SkI1oa4F7X59bDgXpoYDgBqFKsqDgm%2FJyxJiGZRNM5dYLdcoEGL7oDT4SUi2pMfcG%2Fd%2BC%2BTT55IueoRusC1PHPA10ikU%2BSqoSP9Lc53fYfcTKzpzDo0FwUnG04%2F1%2FfwaRS55IOxoTVySQyqZzTCwoICfqHMXDJWx7YNaxG6YinsQcEFis3ajt6%2BjvbzUrY","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}, {"displayPrice":"$12.23","priceAmount":12.23,"currencySymbol":"$","integerValue":"12","decimalSeparator":".","fractionalValue":"23","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"S3SkI1oa4F7X59bDgXpoYDgBqFKsqDgmRIBA%2FNb1rzpF549MVVvaTZfTISsMGxwg0S%2F7r0Sb8PyI5F942bRgz%2Fi8fQtVyJH2yjCG%2FkS225fkRGuUS%2BqJNFGWLwzQgb%2FFv%2FZ6sxkDebZ2UnMt3bGPhShMvcYKyiopLnUUfqdsYOtB3kl1M43UWUXKHRXbNmr%2B","locale":"en-US","buyingOptionType":"USED","aapiBuyingOptionIndex":1}]}

Purchase options and add-ons

Second in the New Military Science Fiction Series by New York Times Best-Selling Author John Ringo. Once the Earth has been Freed, How Can the Former Conquerors be Kept from Returning to Reconquer the Planet—or Even Destroy It?

Of all the hosts of Eurotas the Troias were the most fell. For they were born of Winter.



Between the Solar Array Pumped Laser and Troy, the two trillion ton nickel-iron battlestation created by eccentric billionaire Tyler Vernon, Earth has managed to recapture the Sol system from their Horvath conquerors and begin entering the galactic millieu.

But when the Rangora Empire rapidly crushes humanity's only ally it becomes clear the war is just beginning. At the heart of nickel iron and starlight are the people, Marines, Navy and civilians, who make Troy a living, breathing, engine of war. Survivors of apocalypse, they know the cost of failure.

If this Troy falls, no one will be left to write the epic.



Citadel continues the saga begun in Live Free or Die, following the paths of several characters during the first years of The Spiral Arm Wars culminating in the First Battle of E Eridani.
Previous page
  1. Book 2 of 3
    Troy Rising
  2. Print length
    400 pages
  3. Language
    English
  4. Publisher
    Baen
  5. Publication date
    January 4, 2011
  6. Dimensions
    6.13 x 1.3 x 9.25 inches
  7. ISBN-10
    1439134006
  8. ISBN-13
    978-1439134009
  9. See all details
Next page
Layla
"Layla" by Colleen Hoover for $7.19
From #1 New York Times bestselling author Colleen Hoover comes a novel that explores life after tragedy and the enduring spirit of love. | Learn more

Frequently bought together

Citadel
$17.00
Get it as soon as Friday, May 10
Only 1 left in stock - order soon.
Sold by WITCH BOOKS and ships from Amazon Fulfillment.
+
The Hot Gate: Troy Rising III
$15.34
Get it as soon as Thursday, May 9
Only 1 left in stock - order soon.
Sold by Fibat Trade and ships from Amazon Fulfillment.
+
Live Free or Die (Troy Rising, Book 1)
$19.35
Get it May 9 - 13
Only 1 left in stock - order soon.
Ships from and sold by FindAnyBook.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
These items are shipped from and sold by different sellers.
Show details Hide details
Choose items to buy together.

Editorial Reviews

About the Author

John Ringo is the New York Times best-selling author of the Black Tide Rising series, the Posleen War series, the Through the Looking Glass series, and more, including the Troy Rising series, of which Live Free or Die is the first installment. A veteran of the 82nd Airborne, Ringo brings firsthand knowledge of military operations to his fiction.

Product details

  • Publisher ‏ : ‎ Baen; First Edition (January 4, 2011)
  • Language ‏ : ‎ English
  • Hardcover ‏ : ‎ 400 pages
  • ISBN-10 ‏ : ‎ 1439134006
  • ISBN-13 ‏ : ‎ 978-1439134009
  • Item Weight ‏ : ‎ 1.28 pounds
  • Dimensions ‏ : ‎ 6.13 x 1.3 x 9.25 inches
  • Customer Reviews:
    4.7 4.7 out of 5 stars 1,739 ratings

About the author

Follow authors to get new release updates, plus improved recommendations.
John Ringo

John Ringo

Brief content visible, double tap to read full content.
Full content visible, double tap to read brief content.

I'm a professional author of... Well, I used to say "science fiction." Then came There Will Be Dragons, which is sf with a distinct fantasy twist. Then came Ghost which is techno-thriller crossed with porn. Then came Princess of Wands, a Christian soccer mom battling demons through the power of God. Who knows what's next? Children's books? (I've actually got that one mapped out. You see, there's this girl who is raised by dolphins... You think I'm joking, don't you?)

:-)

Customer reviews

4.7 out of 5 stars
4.7 out of 5
1,739 global ratings
Awesome! Bourne 2.0
5 Stars
Awesome! Bourne 2.0
Great spy series. Feels like watching a movie.
Hide
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

pb
5.0 out of 5 stars absolutely like new
Reviewed in the United States on December 18, 2023
Verified Purchase
fast ship, excellent condition. thank you
Helpful
 Report
Jim Gutzwiller
5.0 out of 5 stars Whoa!
Reviewed in the United States on November 13, 2023
Verified Purchase
John Dingo totally aced this series! It may have some scientific exaggeration in it. But nothing that may not turn out true some day.
The battles, the people, the feelings it evokes? Just awesome !!

Thank you
Helpful
 Report
Adrian
4.0 out of 5 stars A great series but this second book is different from the first
Reviewed in the United States on January 5, 2011
Verified Purchase
I'm a tad bit nervous writing this review as everyone before me seems to unconditionally love this book, while I found there were parts that I preferred not included. Anyhow, ignoring that, the book is pretty good and I finished wanting the next installment to be written NOW.

When we finished book 1- Live free or Die, Tyler Vernon had dedicated much of his fortune to rescuing Earth and readying it for the inevitable cofrontation with the Horvath and the Horvath allies, the Rangara.

Imagine my surprise when instead of continuing along this vein, we spend about a third of a book on two bit player, Butch and Dana, which soon become mostly Dana, since the small players dont really seem to add anything much, besides telling us what is happening groundside on Troy. But devoting two thirds of the book to that isn't necessary imho. In fact Tyler, the main driving force behind Earth's fortification, is nowehre to be seen until about a third way through, whence he takes a main role again as if we never left. It makes the book seem somewhat inconsistent. There are some behind the scenes narative from the bad guys from time to time, which I think would have been a more interesting plot development than Dana and Butch. The politics of the bad guys allows Earth to unknowingly have slight respite, as the bad guys use less force than they should have in their attack on Earth towards the end of the book.

Should you read Citadel?

Not if you haven't read book 1- Live Free or Die first :) Well, what are you waiting for- grab it now!
19 people found this helpful
Helpful
 Report
Nickolas X. P. Sharps
5.0 out of 5 stars A True Ringo Epic
Reviewed in the United States on December 31, 2010
Verified Purchase
John Ringo is hands down my favorite author. With such a prestigious position comes a great deal of responsibility. This means that A) I buy every single one of his books and B) I'm more critical of him than any other author. My favorite work of his would be the Legacy of Aldenata, specifically Gust Front. My least favorite of his works is Live Free or Die. I can understand how some people are inclined to the more technical aspects of hard science fiction, but I'm not one of them. That being said, I view Citadel as a vast improvement over Live Free or Die. There is still plenty of science but there is also a good but more character development.

The main protagonist of the first book, Tyler Vernon, takes a back seat in this edition. In his place we are introduced to Dana and Butch as well as some supporting characters. Dana is a strong willed female in the "new navy", not an easy accomplishment given that she has contracted Johanssen's Disease due to the Horvath attacks in the first book. Dana is a tough and sympathetic character at the same time, having lost family to the war and faced personal challenged to get to her current position as an engineer residing on the Troy. Butch is less compelling but still interesting enough, and both characters give perspective from a lower point of view on the human hierarchy than multi-billionaire Tyler Vernon.

Another good addition is the inclusion of a POV on the side of the enemy. In human vs. alien stories it is always interesting to see humans from a different angle and insight into Rangoran society is an extra bonus. This is a brief part of the book but a benefit to the reader for sure.

There is of course action, done as only Ringo can do it. Enormous space battles, high powered laser beams, volleys of missiles, and the like. Basically the cover art is a true representation of the world Ringo has crafted.

Citadel is a fantastic book, diehard Ringo fans will be pleased and anyone interested in some hard sci-fi and a good ol' fashion space romp are bound for a treat. I am eagerly awaiting the third and final entry in the series!
19 people found this helpful
Helpful
 Report
Edward Lindeman
5.0 out of 5 stars A wild fun sci-fi ride!
Reviewed in the United States on August 9, 2023
Verified Purchase
Can't say enough about this series. A nice gritty near-realtime sci-fi. Love the mix of military and civilian views, and the fun way that we are alien to aliens. Get it. It's worth it.
Helpful
 Report
Dione Greywolfe
5.0 out of 5 stars Love it but I'm incredibly picky about misuse of words!
Reviewed in the United States on January 13, 2013
Verified Purchase
I have never read a John Ringo book that didn't highly entertained me. His name alone is enough to get me to buy the book without knowing another thing about it.

That being said, John, I believe you have misused the word "centripetal" in both Live Free or Die and already (17% into the book) in Citadel. Dana is being qualified in her ship and in the exercise, "...the ship was starting to spin, causing a rather unpleasant CENTRIPETAL effect," the definition of which, according to Wikipedia is, "is a force that makes a body follow a curved path: its direction is always orthogonal to the velocity of the body, toward the fixed point of the instantaneous center of curvature of the path. Centripetal force is generally the cause of circular motion. I believe you should have used the word, "centrifugal," the definition of which is, "the apparent outward force that draws a rotating body away from the center of rotation."

Dana's ship is spinning and she should be plastered on the bulkhead by centrifugal force. The centripedal force is imposed by the ship's bulkhead making her follow a curve defined by the bulkhead itself but it is centrifugal force putting her against the bulkhead and, according to Newton, would have her travel in a straight line were it not for the centripetal force of the bulkhead making her follow a curve. OKOKOK so I'm picky, I own it!

Don't feel badly, it is a common mistake by the best of authors (e.g., Michael G. Thomas in his Star Crusades Nexua series) but it makes my teeth ache every time I see it! Though my degree is in nursing but I made straight A's in English honors courses in literature and writing.
Helpful
 Report

Top reviews from other countries

Alan Gee
5.0 out of 5 stars Great Read!
Reviewed in Australia on August 1, 2023
Verified Purchase
This author never disappoints and his take on a very original concept is very compelling. Highly recommend all of his work and this series is definitely worth it!
Report
Vitaliy
5.0 out of 5 stars Five Stars
Reviewed in Canada on October 4, 2016
Verified Purchase
One of the most enjoyable books I have read to this day.
Report
P. Brooks
5.0 out of 5 stars Winter Born
Reviewed in the United Kingdom on May 11, 2011
Verified Purchase
It Continues on from "Troy Rising" with a bit of an overlap, with two new protagonists A young Naval Rating and a Civilian Construction Worker - As another reviewer has said it does read in part like Classic Robert Heinlein which is always a good thing for a Space Opera.
Faced paced as you would expect from Mr Ringo with rounded characters and excellent action - if you liked his Posleen war series do pick this up.

Have the third installemnt on pre-order and in these cash strapped times, that say's more than Five Stars.
One person found this helpful
 Report
Bernie
5.0 out of 5 stars Escapism
Reviewed in the United Kingdom on January 2, 2021
Verified Purchase
Just buy John Ringo books they help you escape the drudgery of Covid life.
Report
P Cunningham
5.0 out of 5 stars Ringo Rocks
Reviewed in Canada on December 1, 2013
Verified Purchase
Smooth reading, no need to skip the boring parts, there are no boring parts. Ringo writes like he is telling the story over a couple of beers to some buddies.
Report