A point to consider. If earth is flat and not rotating then why would naval gunnery require rotation of the earth for calculating their shots? Hitting a target is pretty important to those guys, considering if the enemy hits you and hits you more before you can hit them, you die and they don’t. It’s honestly really important to shoot and hit something with a 16 inch shell that weighs over 2000 pounds and does significant barrel wear each shot. There was no space race or nasa or optics to consider like today when these calculations were being used to hit the target in 1944. If these corrections aren’t required then adding them would lead to a larger number of misses, where as including them leads to actually hitting the target. Unless flat earth theory has an explanation as for why adding globe earth math into weapon trajectory calculations to make them more accurate, I have to side with the globe model. Plus every other celestial body being spherical when it reaches a large enough size adds more credence. Sphere moon. Sphere sun. Sphere planets in our solar system.