Not quite answering but answering. Still confused. You say infernos don't care about what troopers they hit. I get that. I fully understand that the amount of infernos hits on the unit results in the number of dying troopers. I am trying to figure out how many troopers die due to randomization and if an alive trooper at the beginning of the turn that died from damage also,may,etc absorb those kills. Also awnser doesn't take into account damage. Randomness is being applied. Lets try again... Also running on 3 hours of sleep...
Ex 1.
9 infernos hit. Thus 3 BA are killed via randomness.
A. 3 BA die regardless. Reroll the "selected" troopers until appropriate dead =3 (thus 2, 2, and 2 rolled would result in 2 rerolls until ther are 3 dead troopers)
B. 3 BA die, randomize per rules. Thus 2, 2, and 2 results in only trooper #2 dead because of randomness and thus 2 wasted rolls.
Deeper depending on answer....
Do troopers that died from damage factor into this?
Ex 2.
9 infernos hit, 10 damage was assigned this turn that resulted in killing trooper 2 (alive at the beginning of turn)
A. 3 BA die, randomize. Regardless of damage in the end... Three die in addition to damage kills.
B. 3 BA die, randomize. Apply deaths to those that were alive at the beginning of the turn. Also following above answer.
C. Can't think of too tired...