Review your history. The RAF (and with Polish support) targeted the residential and cultural center of the city in the night raid. The US targeted the rail yards; when bad weather obscured the targets, the remaining planes bombed by radar, and did hit civilian areas, although those areas were not targeted.
In short, the US treated Dresden raids as they normally would, the British as a different kind of warfare. Even Churchill was not willing to give whole-hearted endorsement of this RAF terror bombing.
Hindsight is 20/20.....we can debate whether or not Dresden was effective or not towards ultimately winning the war....perhaps it wasn’t.....but that didn’t make it a crime.