There was some Civil War nostalgia in the 1930’s for sure.
I'm a classic film buff, and noticed there were quite a few movies made in the 1930s (GWTW being only the most famous and spectacular of them) that romanticized the Civil War, especially from the Southern point of view.
Last evening, mostly out of spite for Leftist snowflakes, I watched John Ford's
Judge Priest on YouTube. Made in 1934, it starred Will Rogers as a Kentucky Confederate Civil War veteran turned Judge. So politically incorrect it would make many an SJW cringe, or even fling bricks at the screen.
At the final scene, featuring a Confederate Veterans' Parade, I was tearing up, and I'm a "d*mn Yankee."