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Gates of Hell (Echoes of War Book 4) Kindle Edition
The League of Sol is down but not out. Now Colonel David Cohen tackles his most challenging task yet.
Ferreting out a traitor.
The League fleet has finally been driven from the Terran Coalition’s galactic arm. But enemies left behind on the planets that dot the local cluster won’t go quietly.
Under orders direct from the President, David dispatches a commando team to recon a League-held world, entrusting them with one of his top officers as a guide on the planet she once called home. Unexpected enemy fire leaves the team stranded in hostile territory with no means of escape unless they can disable the planetary defense system.
But David faces an all-new battle of his own. As a wave of League ships consistently stays one step ahead of him, his worst fears are realized.
The CDF has a mole.
Alongside the intelligence ship Oxford, David and the crew of the Lion of Judah race to discover the wolf in a CDF uniform and rescue those planetside before they are lost to a crazed League commander intent on annihilation over surrender.
If they fail, they’ll sacrifice more than just a battle.
They’ll lose the war.
- LanguageEnglish
- Publication dateJuly 24, 2019
- File size3.2 MB
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See full series- Kindle Price:$13.97By placing your order, you're purchasing a license to the content and you agree to the Kindle Store Terms of Use.
- Kindle Price:$33.93By placing your order, you're purchasing a license to the content and you agree to the Kindle Store Terms of Use.
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This option includes 3 books.
This option includes 5 books.
This option includes 7 books.
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From the Publisher


The League of Sol is down but not out. Now Colonel David Cohen tackles his most challenging task yet.
Ferreting out a traitor.
The League fleet has finally been driven from the Terran Coalition’s galactic arm. But enemies left behind on the planets that dot the local cluster won’t go quietly.
Under orders direct from the President, David dispatches a commando team to recon a League-held world, entrusting them with one of his officers as a guide on the planet she once called home. Unexpected enemy fire leaves the team stranded in hostile territory with no means of escape unless they can disable the planetary defense system.
But David faces an all-new battle of his own. As a League fleet consistently stays one step ahead of him, his worst fears are realized.
The CDF has a mole.
Alongside the intelligence ship Oxford, David and the Lion of Judah race to discover the wolf in a CDF uniform and rescue those planetside before they are lost to a crazed League commander intent on annihilation over surrender.
If they fail, they’ll sacrifice more than just a battle.
They’ll lose the war.

Three more action-packed series are set in the Terran Diaspora Universe:
Battlegroup Z
After thirty-five years of peace, one vicious attack destroys it all. An unexpected enemy emerges with an overwhelming force designed to obliterate the Terran Coalition. Reservist Lieutenant Justin Spencer straps into the cockpit, determined to save his home from a vicious foe.
Even outnumbered and outgunned, Justin is never out of the fight.
Deception Fleet Series
The treaty is signed. The war is over.
Or is it?
In the wake of the bitter galactic conflict, a cauldron of desperate refugees is rife with rival cartels and flooded with weapons. In this pocket of lawlessness, old enemies are fighting a new war by proxy. Captain Jackson Adams of the Coalition Defense Force is tasked with gathering a ragtag crew for a black ops mission—infiltrate the cartels and discover the enemy’s ultimate scheme. But what they uncover is more horrifying than anyone ever anticipated.
Breach of Faith Series
Everything is on the table when survival's at stake.
After they learn a missing operative is still alive, Captain James Henry and his crew are hired to extract her. But multiple galactic forces are scheming, and Captain Henry will have to move carefully if he wants his team to survive…
Product details
- ASIN : B07RL3J21Q
- Accessibility : Learn more
- Publication date : July 24, 2019
- Language : English
- File size : 3.2 MB
- Simultaneous device usage : Unlimited
- Screen Reader : Supported
- Enhanced typesetting : Enabled
- X-Ray : Not Enabled
- Word Wise : Enabled
- Print length : 395 pages
- Page Flip : Enabled
- Book 4 of 7 : Echoes of War
- Best Sellers Rank: #192,510 in Kindle Store (See Top 100 in Kindle Store)
- #994 in Space Fleet Science Fiction
- #1,281 in Space Marine Science Fiction eBooks
- #1,389 in Space Fleet Science Fiction eBooks
- Customer Reviews:
About the author

Daniel Gibbs is a recovering computer engineer who spent fifteen years supporting various US Navy and Marine Corps information technology programs worldwide. His love of sci-fi and military fiction sparked an overactive imagination and fueled a growing ambition to bring his unique vision of the future to readers. Decades after the inception of his ideas, he released his first book ‘Fight The Good Fight’ in 2018. Since then, another 43 have followed, with nine new novels scheduled for 2025.
Through his many years of experience, Daniel hopes to bring an authentic lens to military science fiction, especially around the trials and hardships of those who serve.
Customer reviews
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To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers enjoy the book's continued exciting action and well-written content that's easy to follow. The characters are very believable, and one customer notes the interesting mix of war and religion elements.
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Customers enjoy the action content of the book, praising its continued exciting action and good plot, with one customer specifically highlighting the ground battle scenes.
"...The fourth book in the series Echoes of War. Lots of action, many booms, lots of broken and/or dead bodies...." Read more
"...There was also plenty of action as they freed a planet from the bad guys and a lot of the enemy surrendered to the good guys also a lot of ground..." Read more
"Great Book. Characters are very believable and human. It’s just a great story where the good guys can still win." Read more
"Another Outstanding Book in the Echoes of war Series. I found it an exciting read and easy to follow. I have already started Book # 5 Keep the Faith." Read more
Customers find the book readable and enjoyable, with one mentioning it provides a unique experience.
"Great Book. Characters are very believable and human. It’s just a great story where the good guys can still win." Read more
"Another Outstanding Book in the Echoes of war Series. I found it an exciting read and easy to follow. I have already started Book # 5 Keep the Faith." Read more
"...exciting action and thrilling sci-fi entertainment makes his work a unique experience." Read more
"This, right along with the previous books, was great. I have never read a space story like this...." Read more
Customers appreciate the writing quality of the book, finding it well edited and easy to follow, with one customer noting there are not too many grammatical errors.
"Well written, well edited, well ebooked. The fourth book in the series Echoes of War...." Read more
"...I found it an exciting read and easy to follow. I have already started Book # 5 Keep the Faith." Read more
"Well-written with good plot and follow through development of the characters...." Read more
"...It was a good read that flows well and a quick read. I enjoyed reading it." Read more
Customers appreciate the character development in the book, noting that the characters are very believable.
"Great Book. Characters are very believable and human. It’s just a great story where the good guys can still win." Read more
"Well-written with good plot and follow through development of the characters...." Read more
"...The storyline is great and the characters are awesome. I really enjoyed this book and I highly recommend it." Read more
"Excellent plotting, skillfully rendered characters, great action, and not too many grammatical errors (a rarity nowadays)...." Read more
Customers appreciate the religious elements in the book, with one noting how they are woven into the narrative, while another highlights the interesting blend of war and spiritual themes.
"...To me it's amazing that you can keep the religious concept in it so good. I am a believer...." Read more
"This is the fourth book of seven and it is getting better. God is ever present. The fact that everyone one seeks him in there own was is conforming...." Read more
"Interesting mix of war and religion...." Read more
Top reviews from the United States
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- Reviewed in the United States on October 10, 2019Well written, well edited, well ebooked. The fourth book in the series Echoes of War. Lots of action, many booms, lots of broken and/or dead bodies.
(From my reviews of the earlier books). The bad guys are pretty much standard fair, men and women who want (and want to use) power. "The state is the embodiment of the people. It can't be wrong." What makes this series unlike almost all modern science fiction is that (1) some of the good guys are believers (in various flavors) and (2) the good guys are not terribly sure of rightness of the path they follow.
Add energetic spymasters and and ambitious politicians to an long war and this the much worse and much stranger. (Look up von Moltke's four types of officers. Note his advice about energetic but dumb officers. I suppose it isn't a certainty that an energetic spymaster will be dumb but all ambitious politicians are certainly dumb.)
Warning: Not suitable for snowflakes (lots of violence) or SJWs (the bad guys are too much like their heroes).
If you want other (different) sci fi with believers, try Joel Rosenberg's Matzada Mercenary series (Hero or Not For Glory).
If you want other sci fi about conflicts between statists and individualists, try the early books in David Weber's Honor Harrington universe (I recommend The Short Victorious War or In Enemy Hands)
- Reviewed in the United States on March 31, 2025This book had a little bit of everything from traders to the bad guys helping out the good guys in ways you just don't see coming. There was also plenty of action as they freed a planet from the bad guys and a lot of the enemy surrendered to the good guys also a lot of ground battle took place in this one also.
- Reviewed in the United States on December 12, 2023Great Book. Characters are very believable and human. It’s just a great story where the good guys can still win.
- Reviewed in the United States on July 18, 2023Another Outstanding Book in the Echoes of war Series. I found it an exciting read and easy to follow. I have already started Book # 5 Keep the Faith.
- Reviewed in the United States on March 28, 2022Well-written with good plot and follow through development of the characters.
The League is out to destroy “The Lion” because this lovely large warship regularly kicks them back to earth.
The Colonel who runs the show is determined that the League will be destroyed and its hatred of all faith based civilizations will end.
- Reviewed in the United States on January 31, 2021Sometimes we are led right to the very doorway of Hell’s gaping maw in our personal lives and survive by God’s Grace. Often soldiers face this challenge on a daily basis. Daniel Gibbs shows us how one man leads an entire crew right to the edge of the chasm and by standing firm in his faith in God and those he leads, he overcomes an evil that threatens to destroy both his world and those he leads. The fact that Mr. Gibbs delivers such an encouragement while also providing exciting action and thrilling sci-fi entertainment makes his work a unique experience.
- Reviewed in the United States on March 24, 2022Once again Daniel has put together a great story continuing the other books he has written. I will be searching for the next one. I would like to thank Daniel for all the hours of enjoyment his books have given me
- Reviewed in the United States on October 10, 2022David has divided his team this time. He has a special team that Ruth joined on planet to do what they can to see how to free it. His second is the Lion of Judah, his ship, and its thousands of men and women. Thee Lion is on special duty to help keep the convoys moving. He finds something isn’t right and finds traitors in the convoy he must handle. This keeps his ship and men in constant battle and somehow they must find the way.
Top reviews from other countries
- Amazon CustomerReviewed in the United Kingdom on September 18, 2023
5.0 out of 5 stars general Cohen at his best
Book 4 finished and 5 will start immediately! The moral ethical subplots together with dazzling Sifi is ingredient that makes magic written word!