WWII Japanese turret "extra" rotation

I’ve seen an image few hours ago about a capability of japanese tanks to slighty move the cannon to the Left and Right withour the need of depending of the turret rotation (as i forgot the source, i will draw the thing)
I would be glad is someome helps me contributing with more information

image

Like you want this in game? or you’re just posting it because it is something that is historical? or?

Gameplay wise I don’t think it’d change much unless you got your horizontal drive shot out.

Wouldnt that mess terribly with recoil system?

Oh yeah.

as i previously mentioned, i lost the source of the information, but it depicted a small cannon, like the Ke-ni, chi-ha one.

Nay. I just has an overly complicated mount like a casemate vehicle.