Tank Gunnery

Looking up how shooting from a tank worked in the past is a deep rabbit hole.

Rangefinding starts as guestimating.

Then stereoscopic and coincidence range finders where the TC tells the gunner the range.

Then stereoscopic and coincidence range finders, operated by the TC, that feed an electro-mechanical computer that inputs the correct elevation into the gun.

Somewhere in here the elevation is automatically changed depending on the kind of round selected.

Then a laser rangefinder, operated by the TC, that feeds an electronic computer.

Then a laser rangefinder the gunner uses themselves.

Computing the lead on a moving target went from Kentucky windage to being calculated by a computer via various means of inputing the data.

Shooting from the move was, effectively, impossible for a long while then, suddenly, commonplace.

Then there's shooting at night.  Going from no better than an eyeball to active IR to passive IR then thermoraphic.

Many of these changes are still in living memory.