Support attack in the game?

[gianlucad]

In HoI2, AoD and Darkest Hour there was a nice fuction called support attack where unites stationed in bordering provinces would support the units doing the main attack but would not move into the province after combat was done. I have not played HoI3 at all so I don't know if it was in that game or not but from what I've seen of HoI4 there doesnt seem to be anything with regards to support attack in the game. Am I right or wrong?

 

[panzerzombie]

Iirc, it is still in, Daniel talked about that and I think the support attack get differently colored blue arrows.

Edit: could not find the approbiate WWW part yet.

 

[Ariakus Fordring]

Somewhere in some stream I remember that someone said something like once you start attacking,nearby idle troops support you.But I'm not sure,this can be total bs.