The popular view of the Air War in Europe is that in 1939 the British learned that their Daytime Attacks by bombers are too costly and switch over to Night Bombing which they follow though the rest of the war. When the USAAF arrives in 1942, they scoff at the idea and say "Damn the FW-190's, we have the Machine Guns" and push forth with daytime raid after daytime raid, and the 8th Air Force suffers higher casualty rates then the entire USMC. Things are rough until the Box system and then long range escorts are introduced.
I'm not a WWII expert, I admit, so that view might be completely and utterly wrong, I don't know. But thinking it over I have to wonder, is there a technological and doctrinal option for the USAAF to make the same turn over that the British did? Could the US in Europe resort to night and area bombing just like it would later do over Japan in 1945? And if so, what impact would it have?