World war 1

- What was a key mistake/error and how could it have been fixed?

The biggest mistake was the structure and training of the British armed forces, and this occurred long before World War I broke out. The British had a small, professional volunteer army, geared towards fighting and winning colonial wars against technologically and doctrinally inferior but numerically superior foes in Africa and Asia.

during world war ii                                                      

it may be touching on the issue of over sexualizing all women