Ronn's Writing Blog: On Writing World War II Novels

The eighth Sgt. Dunn novel, Sword of Ice. Available on Amazon.com


The Nazis are up to something. This is not news, but the location is. What are they doing on an island above the Arctic Circle? The truth lies with Reichsführer Heinrich Himmler, head of the dreaded SS, who is a fervent believer in Germany’s ancient Aryan myths and history. A creative German archaeologist discovers the location of something powerful and valuable. Himmler dreams of presenting it to Hitler in the full belief it will change the course of the war. He sends an SS expedition to the island to retrieve it for the glory of the Fatherland.

The Allies discover the island is occupied, but don’t know why the Nazis are there. Enter U.S. Army Sgt. Tom Dunn and his squad of lethal Rangers. He leads his squad through frigid, miserable Arctic survival training before tackling the Germans on the Arctic island thousands of miles from anywhere.

Meanwhile, in Egypt, British Intelligence learns that Egyptian rebels, who want to force the British out sooner rather than later, are planning attacks on the extremely valuable and critical Suez Canal. Sgt. Malcolm Saunders and his squad of British Commandos are sent to solve the problem. Saunders, who fought the Germans in North Africa, is less than thrilled at the prospect of going back to the blistering desert.

After arriving on the Arctic island, Dunn quickly determines he and his men must race across the island’s treacherous glacier, which is occupied not only by Nazi SS troops, but also by one of the world’s greatest and feared predators. What could possibly go wrong?

In book eight of the Sgt. Dunn WWII Action Thriller series, Munsterman, in his gripping page-turning style, alternately makes the reader shiver and sweat as he weaves story lines from the frozen Arctic to the scorching Egyptian desert. He continues to masterfully blend fiction and historical fact to create an action-packed plot.


Castle Breach (2017)



Neil Marston, the British spy from Operation Devil’s Fire and Saving Paris, is back. He’s impersonating an SS major assigned as a staff officer at the exclusive Hohenstein Castle, located south of Salzburg, Austria. The castle is known for elegantly hosting high level SS meetings throughout the war. He learns of a dinner meeting with no less than the Führer himself, who is making a rare appearance outside Germany. He advises England, and waits.

U.S. Army Ranger Sergeant Tom Dunn’s new assignment takes him and his men to Greece. The plan is to work with the Greek Resistance to destroy a German supply depot because the Germans are preparing to leave western Greece to face off against the Red Army steamrolling through the Balkans.

Marston’s request is approved and British Commando Sergeant Malcolm Saunders, recently married, earns the task of breaching the castle. His orders: kill the top Nazis who will be attending. Saunders and his squad rush to rehearse the attack and are then on their way to Austria.

At the castle, Hitler reveals surprising and exciting news. Another guest, a member of the Abwehr, Military Intelligence, presents the Führer with an intelligence coup that delights the dictator. Marston immediately recognizes the extreme danger it poses to the U.S. Army. He prays that Saunders arrives on time and can be flexible in his attack.

Saunders suddenly faces an impossible situation when things go deadly awry. He has no choice but to call for help from the one man who always delivers, Tom Dunn.

But Dunn has serious problems of his own in Greece.

Munsterman raises the stakes in book seven of the Sgt. Dunn WWII Action Thriller series. He takes the reader to the mountains of Austria and the coastline of Greece, blending history with an action-packed plot.


Rangers Betrayed (2016)


U.S. Army Ranger Sergeant Tom Dunn’s newest squad member has a dark secret. And a plan.

Nazi Germany’s V2 rockets are streaking down on London, indiscriminately killing civilians. The Allies are desperate to find out how the weapons work. Dunn and his British counterpart, Commando Sergeant Malcolm Saunders, are assigned separate, but related missions.

Albert Speer, the Nazi Minister of Armaments, is transporting ten completed V2 rocket engines to another manufacturing facility for installation into the deadly rockets. Thanks to Bletchley Park’s Ultra intelligence, the Allies know all about it. Dunn and his squad earn the assignment to intercept the rocket engines in western Germany.

Meanwhile, Saunders and his men parachute into Poland, south of Warsaw, to retrieve a captured V2 rocket gyroscope as well as schematics for the rocket obtained by the Polish Resistance. His wedding day is a week away and he promised Sadie he’ll be there on time, but something goes wrong. Separated from his squad, he scrambles to reunite with his men in time to catch the only way home, but meets one obstacle after another.

From their first moment in Germany, as Dunn’s men execute their mission, things go inexplicably wrong. Betrayed by one of his own, Dunn must rely on his quick thinking to get his men out of an impossible situation so they can complete their mission and capture the extremely valuable Nazi V2 rocket engines.

In the sixth book of the Sgt. Dunn series, Munsterman continues to masterfully blend history with action-packed plots in another of his fast-paced WWII Action Thrillers.

Capture (2016)


Following the events in Saving Paris, U. S. Army Ranger Sgt. Tom Dunn and his squad are still assigned to General George S. Patton’s Third Army as it continues to roar across France in pursuit of the German Army. In the fifth book in the series, Dunn crosses the Meuse River, and fights his way toward the Moselle River, only thirty miles from the German border, and the last natural barrier in France.

Meanwhile, in the middle of the night, Sgt. Malcolm Saunders and his squad of British Commandos parachute into Belgium in advance of General Bernard Montgomery’s Army to disrupt and intercept German General Karl von Runstedt’s radio messages.

Desperate to stop the American advance, the German Army puts up fierce resistance at the Moselle River, endangering the crossing and Patton’s advance. Suddenly, Dunn is thrust into a new role. Outnumbered by the Germans, can Dunn adapt to the changing battlefield events and overcome the odds to win the day?

Blending historical events with fiction, Munsterman’s gripping WWII action thriller, Capture, takes us deep inside life and death for soldiers on both sides of the front lines. 

Saving Paris (2015)


Sgt. Tom Dunn returns in his fourth book! Dunn and his British counterpart, Sgt. Malcolm Saunders, and their squads of lethal U.S. Army Rangers and British Commandos must secure the only armor-bearing bridge in Chartres, just fifty miles from Paris. George S. Patton’s Third Army is rushing across France and it must have the bridge to keep pressure on the retreating German army.

Adolf Hitler, still reeling from the defeats and turmoil in France, sends General Dietrich von Choltitz, the Butcher of Sevastopol, already known for his brutality, to Paris as the new governor. It’s obvious even to Hitler that the liberation of Paris is imminent so the Nazi Führer orders the general to execute an unthinkable act.

Back in England, a Bletchley Park analyst reads decrypted German Enigma messages and uncovers a terrifying Nazi threat against Paris. He works desperately to unravel the details and contacts an old friend working at 10 Downing Street for help. As information becomes clear piece by piece, there is only one choice: call on Dunn and Saunders, and their squads.

Dunn and Saunders must fight the odds as the fate of Paris and perhaps all of Western Europe rests in their courageous hands.

In Saving Paris, we see the return of some old friends as, once again, Munsterman weaves WWII history and fiction for another compelling, fast-paced WWII action thriller.

Brutal Enemy (2014)


The third book in the popular Sgt. Dunn World War II action thriller series picks up right where book two, Behind German Lines, left off.

Colonel Frank Rogers, an American intelligence officer on the planning staff for the impending invasion of southern France, goes missing in northwest Italy. Sgt. Tom Dunn, recalled from his honeymoon, and his squad of lethal U. S. Army Rangers are tasked with the impossible: find and rescue the missing colonel before he is captured and gives up vital invasion intelligence. 

Meanwhile, British Sergeant Malcolm Saunders and his Commandos parachute into Italy north of the impenetrable Gothic Line in an attempt to deliver a crushing blow to the German supply line.

While Dunn and his men race across Italy in search of Rogers, the rescue operation takes an unexpected direction. Suddenly, Dunn comes face-to-face with the brutal evil permeating the Nazis from Berlin to the occupied countries.

In Brutal Enemy, Munsterman takes the reader on a terrifying journey into Nazi occupied Italy with his trademark page-turner pace.

Behind German Lines (2013)



Sgt. Tom Dunn and his special mission squad of lethal U.S. Army Rangers are back in France fighting the Nazis.

Behind German Lines begins in July 1943, when the Nazis unleash a new battlefield weapon near Kursk, Russia, during the greatest tank battle in history. The weapon’s catastrophic and unexpected side-effects force the scientists back to the drawing board.

Picking up just eight days after Operation Devil's Fire ends in late June 1944, we find Dunn and his men parachuting into the Cotentin Peninsula fifty miles west of Normandy Beach on another special strike mission whose outcome could affect the Allies’ attempt to finally breakout of Normandy’s bocage country.

Meanwhile, since the Allies have learned the hard way that the Nazi’s concrete submarine pens are bomb-proof, Sgt. Malcolm Saunders and his rugged British Commandos are on their way by submarine across the North Sea to attack the pens at Wilhelmshaven, Germany. What Saunders finds leads his squad and him into a deadly confrontation with a dangerous enemy who has terrible plans for the United States.

After Dunn and his squad return to France on another Top Secret mission, they discover a Nazi plot to use the new and improved battlefield weapon near Caen, right on the front line! With the fate of the western front unexpectedly and terrifyingly in his hands, Dunn and his men race across occupied France to stop the Germans.

With his usual page-turner pace, Munsterman takes the reader onto the battlefields of Russia, France, and Germany, showing life and death, and victory and defeat during World War II.

Operation Devil's Fire

Ronn's first novel.



Operation Devil's Fire begins two weeks before D-Day with two seemingly unrelated events: 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 conclusion: 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 missions: 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.