Neat. I didnt know anythiong about this historic event.
I like the shooting. Its pretty spot on. I think the animated soldiers wer cool. Death animations were neat.
Fun game but I have a few notes.
I think you should find a way to break the information up a little bit. Its a lot to read before you play the game. Also, I think you should make it so that you can skip the quote. After you die, the quote still shows everytime. I think you might need a sign or a trigger to go to the next area - I killed the enemies and then didnt move to the next area until I found a hole in the fence behind a house.
I did not like that the mouse is not locked onto the game - because I have multiple monitors, I was clicking all over the other screens when I turned. In godot, the code is something like... Input.mouse_mode = Input.MOUSE_MODE_CAPTURED (however I think you only want the mouse to be in that mode when youre in battle because you wont be able to click buttons like that) - a great resource for that code is... https://kidscancode.org/godot_recipes/4.x/input/mouse_capture/
I really enjoyed the game. It reminded me of a duke-nuke-em feeling game but with historic feeling. :D Good job.