[Artur]

Well I am sorry but disagree as well. Have you tried the scenario? I see 0-zero downloads. Now if you download the scenario you would have seen that those APCs will not come close because there is a wall of M136s to deal with light armor. If it unloads infantry there are the machine guns a bit backward. I accept different views but criticizing without even taking an effort to look at the scenarios looks odd to me.

With op fir draining you simply send in infantry at 2000m distance and the armor will shoot at it while infantry cannot put a dent in the armor. It will also shoot at the APCs at 2000m even though APCs cannot hurt them from there as well. Now I can imagine you say to set the range lower BUT I want to engage the tanks on 2000 m because I have an edge on arnmor and aiming and gun power.
Nowdays seasoned players do not rely on OP fire at all because of the OP fire draining. I have been there have done that. I enter a spot with infantry and make the armor shoot at my infantry from where I cannot hurt it very much. after it has run out of shots I go in with the armor. If I have scout armored cars to sacrifice I drain OP fire with them.

With a combined arms defense it is useful to set who to shoot at what type of target. It is implemented in several games I believe not without a reason.

Even if I have a tank only force I may want to save 1-2 tanks from 5 tanks to shoot only at heavy/medium tanks.
This way even if the opponent sends in tons of OP fire drainer units which are dangerous at close range I want to have one gun left for the big boys. Or I may want to do the opposite, and keep one tank for general shooting and leave 4 for the heavies. It all depends on the recon information gained in the battle.

Please take a look at the scenarios.

Artur.