During World War II, Germany invested a staggering amount of money in military spending, however, many resources were wasted for a number of reasons. These wasted resources include not only manpower and materials, but also a large amount of money. In fact, according to post-war statistics, the total amount of money wasted by Germany during World War II for various reasons is estimated to be more than $100 billion. 
First of all, improper command is an important cause of waste of resources. For example, after the French campaign in 1940, Hitler did not eliminate Britain in time, which allowed the war to drag on. In addition, the confusion of command in the North African theater also led to the loss of a large number of troops. These mistakes not only affected the course of the war, but also wasted a lot of resources and manpower. Secondly, Germany invested too many resources in the plan to blockade Britain. To achieve this, Germany has developed new ** such as the V1 and V2 missiles. However, the effect of these ** is not ideal, and a lot of money is spent but the expected results are not achieved. 
In addition, Germany supported the economies of the allies. In order to obtain resources, Germany invaded the Soviet Union. However, this decision ultimately led to the fact that Germany missed out on 30 billion marks of economic revenue. This is a huge loss, and if this part of the resources can be used for effective military construction, it may change the course of the war. Military waste is also an important aspect of resource waste. For example, Hitler ordered the production of super-heavy tanks that were difficult to serve. However, due to the technical difficulties, the results of this project were not satisfactory. These wasted resources include not only manpower and materials, but also a large amount of money. 
Finally, misinvestment at the end of the war was also an important cause of wasted resources. At this stage, Germany should concentrate its forces on maintaining the front. However, Hitler still invested significant resources in new and useless projects. These erroneous investments not only wasted valuable resources, but also weakened Germany's ability to fight the war effort.