For what it's worth, this photo isn't staged or from a movie. This was back before the Roman salute was popularised by the fascists.
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Although it took until the US was halfway through WWII before they decided to abandon its usage so, yeah...
You can read more about it here. Tbh I liked it better when the US was mask-off about its nationalism.
*beep beep beeeep *
Yeah it checks out