In an extraordinarily unusual mission, U.S. Army Ranger Master Sergeant Tom Dunn is tasked-not with blowing something up-but with saving a crucial Ruhr Valley electrical power plant from Hitler's horrific scheme. He takes along a team of Royal Engineers who will operate the plant if Dunn can capture it intact. The Nazi SS officer in charge of the plant has received Hitler's scorched earth decree and intends to uphold it. At any cost.

Saunders, a recently promoted Second Lieutenant, is temporarily assigned to a Commando Brigade on the northeast coast of Italy. There he and his platoon will fight the Germans on what is called the Spit, a strip of land between the Adriatic Sea and Lake Comacchio. Their targets include fortifications with Biblical names, and bridges over canals. Can Saunders and his men carry their attacks to a successful conclusion?

Later, Dunn meets with his commander, Colonel Kenton, and Major Peter Fisher of U.S. Army Military Intelligence. The Nazis have dreamt up another bizarre and deadly threat, the schallkanone, the sonic cannon. Using the physics of sounds waves against human physiology, the weapon can disable and even kill a human being from a distance. Military Intelligence has located the production facility southeast of Nuremberg. Dunn and his platoon must assault the facility and destroy all the weapons before they're turned loose on Patton's Third Army north of Nuremberg. Will he and his dedicated and deadly Rangers be able to stop the Nazis plan in time?

Munsterman excels at merging fiction with historical fact and has delivered a powerful, page-turning Sgt. Dunn novel based on real WWII events. Keeping the readers on their toes in Grim Measures, he shows us the courage and strength of WWII soldiers, and how they react to their missions and the world around them.