OK I had some time tonight to think over all our posts, so this is long, sorry!
Just a preface: I am informed the rules have gone to print, so changes will be down the line if they are merited. Sorry about that, but deadlines are deadlines. :-( Obviously, there will be discussions continuing on this and other forums. Thanks for your continued input!
The issue is: damage caused by excess hits being regardless of armor, when two units are stacked.
The concept upon which the rule hangs is: excess hits rolling over like this should lead players to be careful of stacking, just like they have to be careful of the stacking limit itself, which also kills without regard to armor.
To try and support that, and from a simulation perspective, let me set the scene from your posts, gentlemen. Maybe I can convince you (and maybe not…) ;-)
Firstly:
MkV’s example was in fact a self-described perfect storm. And the edit on MkV’s later post is most important: “Edit, Actually, re-reading the Improved position rules, it looks like each unit would receive their hits, roll saves, then ignore one of the hits.”
Critically, that is not quite correct. The rule states that “A unit in Improved Positions ignores the first hit it receives each time it is attacked.” So, the M-901 ignored a hit, missed its armor roll and so took the second - and it should have taken a third. Though reduced, it should have become Disrupted first, then eliminated (two hits - unless it was already Disrupted??); then the M-1 should have only had to take two hits AND THEN the improved position still should have allowed it to ignore the first of those hits. Without an armor roll. So, in fact, the M-1 should have received one net hit and so have been disrupted…and very much still alive.
To my mind, I ask myself: is this a plausible result with Volleys of 125mm rounds coming downrange that are actually on target (thus the initial five hits, not to mention whatever inflicted the first two hits on the M901) in a small, overpopulated kill zone? I think yes. The M-1s were Disrupted but US Morale/Training is typically good and so it would likely recover quickly. And with no more M901s, now its armor value IS in play. Did it need an additional evaluation against a second more powerful armor value to reduce the excess hits? As a designer, I still think no, the kill zone is too small, there is so much fire coming down range and on target that its almost like a critical hit of a sort, and as RARE as same, but without calling it that. Again, a perfect storm. But still plausible to me because of its infrequency. Yes: in this case I think the IP held up to its reputation.
I have already said that stacking is dangerous. As for stacking different unit types making the heavier armored ones more vulnerable? As you point out, Starman: “It is unlikely Tank Platoons would intermingle with APC/IFV or soft vehicles and very few light armor or soft vehicles would risk being crushed by heavier vehicles, they would keep their distance and present a separate distinct target.” Yet: a separate distinct target is, well, in the next hex, to my mind.
But yet in the example, in our perfect storm, the defender did in fact stack an M901 and an M-1. And why not? They were in an IP, perfectly reasonable…yet – still stacked. In effect (though not explicitly stated), therefore intermixed. Inside of that hex, if the M901s and/or M-1s are forced by the large volume of incoming fire to shift fighting positions within the hex they are all in fact so close that yes, the vehicles may collide, or be crushed, or lose a track, or anything at all that represents being hors de combat, and so reducing or eliminating the platoon, regardless of, nay, because of the heavy armor. And additional casualties may mount from the incoming fire itself: in having to shift, heavy armor flanks are inadvertently exposed, the weakest armor on most of these tanks, besides the top deck and bottom armor. There is a lot going on in any one hex or counter when the dice are rolled, to my mind. For this reason, the M901 can and does make the M-1 more vulnerable just for being there, regardless of the M-1s armor.
Secondly:
I want to address MkVs point about the “careful fire selection” on the IP: “My concern is that this was a situation setup deliberately by careful fire selection. The previous shots were taken at the M-901 with setting up this shot in mind.”
Intentionally? Sounds like it. Yet I do not think anyone could have EASILY set up a shot like this.
It would be dependent on a multi-layered result of just enough hits to not kill the M-901 (two) and then banking on a higher than average return on 6 dice to make a higher than average number of 3s or higher, or six hits, which would result in the M901 being eliminated and the M-1 being reduced and disrupted (and still alive again). Score exactly two hits on the first shot and then score all six hits in the follow-up? I can only go on what I think I would feel: I am too wrapped in the overall game to worry about die rolls that I truly cannot control. That said, shooting at the M901 with that intent is not invalid or unfair or even unusual. To attempt so precise a result in a D6 system so that one attack damages an M901 but to have supporting Volley fire on hand for a coup de grace? I think that’s fun and brilliant myself. Or plain crazy... ;-)
And risky.
Why risky? Though the “tactic” is dramatic, to my mind it has much more potential to backfire than not, if I am reading the odds correctly. Because, despite excess hit rules and regardless of armor, you have to score 2 hits plus 6 hits that’s 8 hits out of 8 or so die rolls to seriously damage, not eliminate, the M-1 in this situation. So, allowing it to happen once, for me, ads spice and drama to the game but will be difficult to reproduce (I think, at least if playtesting is any foreteller of results).
And a side note: Volley Fire was deliberately brought in as a modifier to deal with units in IPs. It was suggested by Jeff Schulte. And you see even then you need a perfect storm to damage an M-1 in an IP.
Lastly:
Stacking is two units because if you have your average two vehicle platoons (6 - 10 vehicles) you can give them roughly 50 - 75 yards of separation between their constituent vehicles in a 150 yard hex (barring real-world terrain restrictions like trees and such). Thats pretty much the minimum recommended combat formation separation, from what I have been told. Thats 10 targets in a space the size of a US football field and a half square. Pretty small, I think. ;-)
So that’s my take on this: I want you to see the style of thinking that goes into my rule choice. Again, I may not change your mind but then again I may.
Thanks for taking the time to read this!