My great grandfather flew in the First World War for Britain, he was of the opinion that the air war in WWI was the last one fought by gentlemen as gentlemen.
Yes, I would agree with him. Warfare has been increasingly barbaric ever since. Winston Churchill commented in the same vein regarding WWI, something along the line of "War used to be terrible but glorious, but science has made it miserable and bloody."
The WWI air war being a gentlemen's affair reminds me of Hartmann's surrender at the end of WWII. He landed his Bf109 on an American fighter strip, got out and was mobbed for autographs.