This is not a tale of invasion and great battles, but an account of a clearly-defined military strategy. It began in 1937 when Guernica and the Chinese cities of Chongqing and Shanghai were devastated by bombs. The destruction of civilian populations from the air culminated in Hiroshima in 1945.
The world that emerged from WWII was changed forever because of the military reliance on the strategy of destruction caused by aerial bombing. Overcome by its own technology, humanity would now be confronted with its ability to destroy itself.