Tank accuracy...

[Joonny]

I think it doesn't matter for the PzIV as they have a 3-man turret (i think) ie a tank commander and then a seperate loader and gunner. If a tank has a 2-man turret losing the tank commander should in theory lose accuracy if the tank CO is taken out.

From the manual:

1 man turret - some early war tank models with a crew of 2
have only one man in the turret - meaning that the tank commander
is usually also the gunner and loader, and therefore cannot remain
unbuttoned and fire the tank's main armament at the same time.
This greatly diminishes a tank's spotting abilities while firing and
affects rate of fire and accuracy also, as the tank commander has to
reload by himself and therefore is forced to take his eye off the sight
for each shot.

So if the tank is reduced to one man inside the turret the gunner will also have to reload and thus affects ROF and accuracy.