Think about the Army with their manual, split trail 155 MM Howitzers and the "TOT" time on target which allowed multiple guns to fire , using different angles, different times, and hit the targets at the same time, giving no warning to the bad guys...WITHOUT COMPUTERS.
I was a pill roller attached to the arty guys, and I can tell you that the shooters took real pride in doing it right.
With today's computers and GPS systems, it is almost impossible to not get a "TOT" correct.
A serious war today would involve unheard of munitions that spread disease amongst the populated areas the way rainfall sweeps across a field. Billions will die and for what? So somebody can say, “We won.” Indeed, that’s a worthy goal. Or is it?