What is an example of how Hitler's mistakes contributed to Germany's defeat?

Hitler's refusal to conduct tactical withdrawals during military campaigns is a clear example of how his strategic decisions contributed to Germany's eventual defeat in World War II. Tactical withdrawals involve retreating from a battlefield to preserve forces for future engagements, which can be critical in a prolonged conflict. By insisting that his troops hold positions at all costs, even when it was strategically unwise, Hitler often subjected German forces to unnecessary losses.

This stubbornness to retreat was particularly evident in the Soviet Union, where his insistence on keeping troops in untenable positions led to encirclements and massive casualties, as seen in battles such as Stalingrad. Such decisions not only depleted the German military's strength but also lowered morale among soldiers who were aware of their precarious situations.

In contrast, building a strong navy, prioritizing alliances with Italy, and increasing diplomatic efforts in Europe were strategic choices that, while they may have had benefits, did not directly lead to battlefield failures in the same way. Instead, these choices reflected Hitler's broader ambitions and ideologies rather than immediate tactical decisions that directly impacted the war.