The level they were willing to go would have made insurgencies in Iraq and Afghanistan seem tame. even the elderly in some cases were being given sharp sticks and expected to train on how to defend their given area.

I know a lot of people in the modern age abhor nuclear weapons and consider their existence crimes against humanity and their use in WW2 the greatest atrocities ever committed, but their use in 1945 factually saved the lives of hundreds of thousands on both sides, Japanese commitment to defending the home islands that intense it's entirely likely literal millions would have died in their defense, despite knowing it was inevitable a US force would eventually successfully gain control of most if not all the population centers and resources.

As a matter of fact, more people died in Tokyo from daily bombing raids in a single day than both atomic bombings.