Our entire army was wiped out by the blitzkrieg in 6 weeks. It has way more to do with our inferior technological progress at the time than giving guns to civilians or not.
Your just proving my point. Imagine if not just the military but all of the people were armed with modern weaponry.
Wouldn't stand a chance against tanks and planes. Civilians wouldn't be as coordinated as the military too. They went from Poland to Moscow and everyone had a gun there
North Vietnam had a lots of military. The US did the most damage by killing 2 million civilians and 600k soldiers. They did not lose the battles at all, it was just unnecessary.