An interesting look inside of Hitler's Nazi empire and the fractures caused by his attempts to direct the war effort. The author does a great job of explaining the impacts and failures caused by Hitler and how it affected the war. There was a good use of first-hand accounts and testimonies to further illustrate the points being made. This is a good read for the historical enthusiast.
NetGalley, Ron Baumer

Geirr Haarr’s previous books described the three phases of the German invasion of Norway in 1940 and all were critically well-reviewed. No Room for Mistakes describes Allied submarine operations in Northern Europe from September 1939 to the end of 1940. It focuses primarily on the Royal Navy but includes the operations of Polish, French, Dutch and Norwegian boats under British control. As in his earlier books, Haarr demonstrates the rare ability to assimilate previously unpublished photographs which he uses to complement the text perfectly together with a sequence of well-drawn maps. His research into a variety of archives has enabled him to describe the actions of individual commanding officers together with the influence their doctrinal and training backgrounds had on them as well as the deployments of submarines on war patrols under difficult and unexpected conditions. The differing concepts of how best to use submarines are also covered extremely well. Overall, the text has both.. Read more
Davids Hobbs- Australian Naval Institute