SgtBalicki: E&C's first answer is correct. You start over "fresh" with the MW hit allocation. In addition to the "it's harsh for the guys in front" aspect, note that this does increase the chance of being able to place a MW hit on a high-armor target. Chances are better that they would save on the normal hits, so they'd still be around for the MW allocation. This gives something of an effect of heavy weapons trying to hit priority targets, but it's not failsafe (fog of war and all that).
Evil and Chaos wrote:
-Roll AP attacks.
-Allocate AP attacks.
-Place Template and Roll MW Template attacks, mark which units have been hit by the barrage. (This can have the effect of double-tapping units with a normal hit and a MW hit)
-Make Saves for normal hits, Remove casualties.
-Make Saves (If any) for MW hits, Remove casualties.
I think all the "to hit" rolls are done before allocation. The barrage hits should be rolled first, imho, even though they are a combined hit/allocation. Since we clarified the barrage allocation, it seems pretty clear that it's the barrage-specific allocation that is out of order, not the barrage to-hit.
This has several advantages:
If you're using the speed-rolling technique, the "front to back" would always double-tap to the maximum (rendering it worthless, as the attacker would always demand strict rule process in any combined attack). If you allocate after to-hit, then both speed-rolling barrage and normal allocation would work exactly like normal.
It sticks with the philosophy of "spread out the hits for allocation" from the LV allocation FAQ.
Finally, and most importantly, allocating normal hits after the barrage allocation would
work the same whether or not the barrage was MW or normal. KISS.
So, I would modify that to:
To hit:-Place Template and roll MW Template attacks, mark which units have been hit by the barrage. (All to-hit rolls first as normal, barrage allocation out of order.)
-Roll non-barrage attacks.
[Note, the order of to-hit rolls doesn't really matter. No casualties should be removed before all rolls are completed, so the barrage should get the same attacks either way. However, I'd place the barrages first, simply to avoid confusion.]
Normal allocation (Back to normal order.):
-Allocate AP attacks. Skip units with hits allocated (by the barrage) as normal.
-Make Saves for normal hits, Remove casualties.
MW allocation:-Allocate any remaining MW hits (e.g. Gargant with MW barrage and a TK Gaze hit) as normal.
-Make Saves (if any) for MW hits, Remove casualties.