It's not that big of a deal, but imperial stormtrooper officers wore black uniforms. Gray uniforms like in this game were worn by navy officers : r/StarWarsBattlefront
Are the Star Wars imperial uniforms based on the WW II Japanese Navy, especially the caps they were wearing? - Quora
ParaBellum on Twitter: "The final Emperor of the Russian Empire, Tsar Nicholas II, standing alongside the final Emperor of the German Empire, Kaiser Wilhelm II, both wearing the Imperial Navy uniform of