20 Things You Didn't Know About Solo: A Star Wars Story
10. The Imperial Combat Scenes Were Inspired By World War I
The scenes earlier in the film depicting Han in the midst of combat in The Battle of Mimban while enlisted in the Imperial Navy were designed to be reminiscent of real-world warfare.
In particular, these scenes were modelled off trench warfare from World War I: the infantry charges with devastating explosions going off around them, the trench lines, and the sheer chaos of it all clearly parallels what you'd expect to see in a more traditional war movie.
Given that much of the Original Trilogy's aesthetic and style was influenced by World War II - even beyond the obviousness of the Empire = Nazis - it's a little poetic that this prequel lifts from World War I instead.