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Sgt. Dunn #1

Operation Devil's Fire

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When Allied intelligence agencies discover the Nazis will complete construction of their atomic bomb before the summer of '44 is out, the race is on to destroy the German facility before the course of the war takes a terrifying turn.Operation Devil's Fire begins two weeks before D-Day with two seemingly unrelated a British spy, working in Berlin, steals a top-secret memorandum and is terrified by its contents. Two days, later a P-51 Mustang pilot spots a new German jet bomber while on B-17 escort duty over Germany. When American and British intelligence link the events, there is one inescapable Germany will finish the atomic bomb first and, furthermore, possesses a new transatlantic jet bomber.U.S. Army Ranger Sergeant Thomas Dunn and his British Commando rival, Sergeant Malcolm Saunders, receive top secret orders from President Roosevelt and Prime Minister Churchill. Their teams of rugged, lethal soldiers will fly into Germany. Their destroy the German atomic bomb facility and the new jet bomber. Failure means the invasion of Europe was all for nothing. If Hitler drops the atomic weapon on the United States, Roosevelt and Churchill will have no choice but to concede the European continent to the dictator. While the President and Prime Minister wait and worry, the two elite teams fight against enormous odds to complete the missions and return safely home.

360 pages, Paperback

First published July 11, 2011

244 people are currently reading
64 people want to read

About the author

Ronn Munsterman

24 books20 followers
Ronn writes World War II action thrillers.

Ronn Munsterman is the author of the Sgt. Dunn Novels series. His lifelong fascination with World War II history led to the writing of the Sgt. Dunn Novels.

He loves baseball, and as a native of Kansas City, Missouri, has rooted for the Royals since their beginning in 1969. He and his family jumped for joy when the 2015 Royals won the World Series. Other interests include reading, some more or less selective television watching, movies, listening to music, and playing and coaching chess.

Munsterman is a volunteer chess coach each school year for elementary- through high school-aged students, and also provides private lessons. He authored a book on teaching chess: Chess Handbook for Parents and Coaches, available on Amazon.com.

Munsterman retired from his “day job” in December 2015. In the latter half of his career he worked as an Information Technology professional with everything from Microsoft Access to PowerBuilder to web development and finally, with SAP. His new “day job” fulfills his dream: to be a full-time writer.

He lives in Iowa with his wife, and enjoys spending time with the family.

Munsterman is currently busy at work on the next Sgt. Dunn novel.

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5 stars
379 (53%)
4 stars
240 (33%)
3 stars
69 (9%)
2 stars
17 (2%)
1 star
5 (<1%)
Displaying 1 - 21 of 21 reviews
Profile Image for Greg Oaster.
177 reviews
May 21, 2018
Compelling story

Thankfully this is a novel. It's scary to think that the Germans would have been able to fly a bomb across the Atlantic ocean. In reality I wonder how close they were. They were amazing at developing top notch equipment overly engineered.

Really enjoyed this book look forward to the rest of the series
Profile Image for CW Crollard.
129 reviews1 follower
September 4, 2023
Sgt. Thomas Dunn and his associates pull off a WW2 action packed thriller.

Toward the end of the war, two daring missions over France and Germany would hasten the end benefiting both Britain and the United States. Brilliant spy craft and flying skill will keep you reading to the exciting ending.!
71 reviews1 follower
August 25, 2017
Allies in Arms

This was a very well written book on the action taking place (fiction). However, the events that took place are real. I will recommend this book to friends and family. Alvis
101 reviews
February 26, 2018
A Great Book!

I have already downloaded book 2. I like series with strong characters along with some romance. The friendship between Sgt Dunn and Sgt Saunders and the missions they are involved with makes a good book.
66 reviews
August 7, 2020
One of the best !

One of the best WW11 stories I have read, and I bring old Retired Military Guy, I have read many. I look forward to reading others by Finn Munsterman very soon. Ronald Pope, US N Retired.



374 reviews
July 14, 2023
A Different WWII Historical Novel For Me

I’ve mainly read about the women’s role in WWII so reading this one from a soldier’s perspective is definitely viewing the war differently. This is the first of a series and I will definitely be reading the rest. A 5+rating for sure.
807 reviews8 followers
March 27, 2024
Wow! What a novel!

This book is excellent heavely researched, Ronn is a damn good writer. My father was a W W 2 vet so I esp loved this. My father was european theater. Can't wait to read next book. So fast paced and action packed. Kuddos!
2 reviews
September 5, 2025
A magnificent book full of adventure.

This was a magnificent book, full of adventure, and an easy read. I hope this is the beginning of a long and enjoyable series of books to come. I can’t wait to start on book 2.
127 reviews2 followers
March 15, 2018
Good WW2 novel

Very good war novel. Holds your interest throughout. First book in a new series. Will continue with next book in series.
Profile Image for Jim.
282 reviews2 followers
December 26, 2018
Operation Devil's Fire

WW2 stories are always exciting. Sgt Dunn did not disappoint. Action abounds. Treachery is also involved. The last several chapters are hard to put down.
18 reviews
January 20, 2019
great storyline and moved fast

I would recommend to any one that likes ww2 stories . The romace was a little extra but interesting touch
Profile Image for Steve.
34 reviews
September 1, 2020
Enjoyable

I really enjoyed this book. While there was some predictable stuff, the book was very enjoyable. Thanks! Hope to read more.
13 reviews
May 12, 2024
good story fun read

I really liked this book. It was fun and fairly fast paced. I look forward to reading the next one.
59 reviews
August 15, 2018
Excellent Historical Fiction

This is a great series. I hate doing book reviews, because I don't want to spoil it for anyone. I will simply say that this is a well written series, with characters you will like and care about. There is plenty of action and adventure. There is camaraderie among the men. There is family and there is romance. All your emotions will be in play and your adrenaline will be pumping.

I have recommended this book to family and friends. For me, this book is really interesting, because I was born on a military base, to a father who was a career soldier (36 years). He enlisted a few years before WWII and was commissioned during that war.
192 reviews1 follower
June 7, 2016
Great Story!

As a self proclaimed student of WW II history, I appreciate these "alternate" historical stories of WW Kindle, and the fictional heroes they create. I just finished reading the Cameron stories, and this is obviously my first Sgt. Dunn story. I'm looking forward to starting book no. 2.
Profile Image for Richard R., Martin.
387 reviews4 followers
August 26, 2015
A good war story but the author took liberties with history saying that Germany had an operational jet bomber and working atomic bomb.
This entire review has been hidden because of spoilers.
2 reviews
April 12, 2015
Cracking good read

A refreshing change from the usual gung :O hero b.s..ill recommend to my friends. I,'ll read more of Sgt Dunn and other works by Mr. Mainstream.
Profile Image for Stan Cromlish.
Author 12 books1 follower
Read
January 17, 2016
Awesome WWII Historical Fiction

Ronn Munsterman has published a great historical fiction book about WWII. This book is the first book in the author's Sergeant Dunn series.
465 reviews4 followers
February 3, 2016
Some of the best historical fiction I've read in quite some time. A good mix of action and humor along with excellent character development.
Profile Image for Bob.
92 reviews
June 14, 2016
Continued WWII reading

Another enjoyable book about WWII from the perspective of Rangers and Army Air Corps. Light and enjoyable filled with facts and adventure.
Profile Image for Chaplain Stanley Chapin.
1,978 reviews22 followers
November 20, 2016
A very good read

I happened upon the fourth book in this Sergeant Dunn series and found it enjoyable. I this looked up the series and started with the beginning novel.
Displaying 1 - 21 of 21 reviews

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