Does anyone believe there was oven technology to disintegrate bodies back then and if so if any country had the amount of fuel and space needed while fighting wars with world powers.

That said, why not museums for everyone who had to deal with war time prison camps? I have mentioned it previously, my maternal Grandfather a civilian engineer in Indonesia was captured by Imperial Japan and held in a prison camp for almost 4 years. He got no country just for Dutch people. He got no reparations or military gear. He got no movies financed by Steven Speelberg. Not even a thank you card.