B-roll Nuremberg destruction after World War II

At the end of World War II, the Allied forces launched a final attack on a German city, once a symbol of Hitler's power, reducing it to rubble. This city, now destroyed, was to serve a new purpose in its Hall of Justice, where the final judgment of 22 men who violated human decency and the Ten Commandments would take place.

What does the term 'Savage Air Onslaught' refer to in the context of the text?

Who were the 22 men judged in the Hall of Justice, and what were they accused of?