ORIGINAL: Veitikka
Personally I've always thought that since air targets usually have a high threat value and they move fast or can disappear behind terrain features quickly, they should be engaged immediately with all weapons, so there's no need to have a SOP option for it. Of course, there's a big difference between a scout helicopter and Apache. I think whenever you see an Apache you want even your tanks to engage it?
Nope. This really depends on the situation and distance from target.
In that situation of screenshot, if I were tank platoon or company commander, I would command my boys to concentrate on front, preparing for ambush, slowly push forward, and engage enemy
TANKS when they are in sight. Here are reasons:
1) My recons are dead, I have no clear info of whereabouts and numbers of Leo2s. I have no direct LoS on hiding Leo2s. Because Leopard2A4 is really good tank, it can toast any T80s within very short period of time. I would rather concentrate to find the imminent threat first, then deal with others next, one at a time.
2) My ambush plan was success, and my tanks are within 1km against FRG Leo2s. I have much better chance to hit Leo2s than helicopters far behind, and this is really a good chance to wipe them out. I don't want my boys to waste reloading time against helicopters, and I want my boys to all eye on the highway to find hiding tanks, because I want to clear the Germans from highway.
3) I have Tungu and Tor, 8 vehicles (= 4 squads) for each of them. I nicely dispersed them and keep good distance (not that far and not that long) from my tanks. Clearly my tanks are too far away from helicopters to do meaningful works. That helicopter was not gunship, but a recon one, but still I need to regard them as dangerous. But, because of the reasons I wrote above, I just can't let tanks to shoot to helicopters. So, for this situation, it is better to let AAs take care of helicopters and let tanks do their job.
Likewise, everything is situational, and this decision really depends on distance. If helicopter is too far, engaging against it is not tactically sound. Sometimes concealment is very important, and open fire from too far is just nothing but advertise my position very loudly to my opponent. Real world is not something like BF series. I also can kill helicopters and I killed gunships in SB Pro, much realistic simulator then any BF series. But again, this really depends on distance.
If I were real tank commander and if I see Apache in far distance (2000m+), I would not engage against them to advertise my position to enemy and waste my boys ammo. Rather, I would command them to deploy smoke and retreat, or reverse, or fast move and hide to nearest cover, and concentrate and engage against ground target within effective range, where my boys can hit with much better chance. And I will directly contact HQ to report Apache and ask HQ to grill AA operators to do their job, and ask him to request artillery smoke field to cover my boys during retreat or push forward. Apaches use near IR beams, which would be a slightly influenced by WP smokes. If all of my AAs are dead then I would consider to engage Apache, but this is not simple decision to make, especially if there are dangerous targets like Leo2s are on the field.
If my contact distance is close (1000m-) then I would fire against Apache with all I have. If I have affluent ground targets, I would call one or two tanks or IFVs to engage helicopter, while all others engage against ground targets. But if I have no ground target then I can concentrate on Apache.
That is why I suggested SOP to control engagement distance or aggressiveness towards air target for tanks and IFVs, at least give commanders a chance to choice what they want to do. Because everything is very situational and so many things, like distance and number/threat level of ground targets, should be also considered to command to engage air targets or not.
In fact, I should have detected helicopters from radar AAs or my recons before I push my tanks. But in this game, my AAs were too bad ad shoot down helicopeters (so many missed missile against helicopters. Is this intended?), and recons found helicopter too late. Thats why tanks were exposed to helicopters in this game. But, engagement against helicopter is very situational and needs some other things to consider.