Artillery historically was not called in by skygods who had perfect communication with all units in the field.
The United States and United Kingdom had the best field communications and best artillery of the war. The US had the best by far for the reasons I will explain in a second.
German FOs were specially trained survey teams that would literally survey the battlefield with land survey equipment and report their findings back to the artillery battalions and exactly where to hit with extreme precision. This means that German artillery missions were slow, generally had to be preplanned, and heavily reliant on extremely well trained and limited FOs, but mostly pinpoint accurate.
UK fire missions were able to be called in by a plethora of men, not just FOs. They generally used already available maps and did not use survey equipment. They substituted accuracy for sheer number of shells. When someone called in a firing mission, batteries would fire scouting shells, when the shell landed more or less on target whoever called in the barrage would relay that information back, and then the Brits would drop the hammer.
The US developed arguably the most intricate artillery system ever seen by planet earth. They created metal tapes, like tape measures, that had the calculations for massive, MASSIVE amounts of meteorological, windage, barrel wear, distance, elevation, and more variables that allowed the US to drop entire battalions of artillery support anywhere, anytime, with the precision of the Germans. The pre-calculated data also meant that with some napkin-back calculations and a timer, the US could drop a multitude of batteries on a single target at the exact same time. This could be done with no more than 20 minutes preparation, depending on exactly how much artillery was being used.
This led to situations like Mortain in August '44 where something like 3 companies of American GIs held off an entire Panzer Grenadier division for 2 days because whenever the Germans would advance up their hill, over 12 battalions of American artillery would drop the hammer on them, shoving them back off. We are talking emergency fire missions made up of a dozen battalions of artillery able to blow up specific slopes of a specific hill within minutes with no prior scouting shells. That was the sheer efficiency and danger that Uncle Sam's artillery brought to the game.
So when you say stuff like this, it's kinda silly, because for some armies, like the US Army, they might as well have had a sky god dropping the shells as far as the Germans were concerned.