I'm asking this because I can't find an up-to-date and credible source of information on the subject (since it has apparently changed at least once over the years). My question is, when does instant death take place during wound allocation in close combat (and shooting for that matter)? Do you allocate wounds and THEN apply instant death (meaning some of it could potentially be wasted), or do you allocate a wound, apply instant death, then allocate another and apply instant death, and so on?
For example, say we have a 3 Centurions in CC with a Bloodthirster. The BT scores three wounds, one of which being ID. Do we, (a) apply the ID wound to the first Centurion, apply the ID rule and remove him, then apply the next two wounds to the second Centurion and remove him too, or (b) apply the ID wound and another wound to the first Centurion and remove him (essentially wasting the ID) then apply the third wound to the second Centurion, leaving him alive?
The last time I played, years ago, you would choose path "b" and waste the ID. But now I'm being challenged and can't find up-to-date evidence to support my argument.