Great article. I had known about the conversion of some B25s to Gunships, but not the details, and your article went into that in depth. I can just imagine how much more devastating they would have been had the Air Corp adopted 20 and 30mm Cannon much earlier (not that I'd want to stand in front of a .50 Browning firing towards me).
Those that complain we were too hard on Japan or Germany, are ignorant of the true cost of War. It's not just about armies and navies fighting each other. The unspoken Goal of Wars successfully fought, lies in destroying the enemies ability to make war. In both theaters, we were the attacked, not the attackers, and we were justified in our defense as well as our offense. History shows, that just beating an opponent back within his own borders, only leads to further conflict later on. The powers that be decided that the enemy posed a threat, not just to us, but everyone else, and the actions of Japan and Germany before and during the War, shows they were right. The Japanese Civilians, and to a lesser extent the Germans, had been so thoroughly propagandized by the military, Civilians were expected to fight the coming invasion with their bare hands or to kill themselves rather than surrender. The mass Civilian Suicides on Okinaw, Saipan and other Islands gives evidence to how deeply ingrained this Propaganda was in the population.
It was believed by many,, that Invading the main Island, would have caused more loss of life, not only in the Invading Forces, but the Civilian population, than wiping out two cities, and their populations, was considered less loss of life. I've neither studied or read anything that makes that assumption, wrong. Unlike Germany, Civilian Resistance to the War, was virtually absent. Japan had modernized, but the people still very much lived in a Feudalistic Culture. Whatever the Emperor, and the Warlords said, you followed, or faced death.
When you build Weapons Production Facilities in a neighborhood, you're begging for Collateral Damage, eventually.
All down through History, one maxim holds true in every conflict. Men make War, but Women and Weams bear the costs.