Something that's been running through my mind lately...
Gary Lewis (of Gary Lewis and the Playboys) got drafted, when he returned he found his style of music no longer relevant. I'm sure there were other artists in the same boat.
OTOH without the war songs like Barry McGwire's EVE OF DESTRUCTION and Dylan's BLOWIN' IN THE WIND wouldn't exist, along with many other songs. The entire Folk Era might not even exist so no Peter, Paul and Mary and possibly The Kingston Trio.
Any thoughts?