Germany : Ineffective Command Structure
1. Hitler made himself Commander in Chief of the Armed Forces and had his generals constantly report to him
2. Hitler was inexperienced yet regularly intervened in military decisions
3. Hitler also made several costly strategic errors against the advice of more experienced generals
→ Refused to withdraw from Stalingrad, led to loss of an entire field army
→ Changed tactics from focusing on destroying RAF to bombing cities, allowed RAF to recover
Declaring war on USA 1941 :
→ Brought formidable enemy into the war in Europe, USA was very powerful