Bombing by Average

This mechanics can also be applied to ABs as Carolina is suggesting:

Air and Naval base damage
@Carolina:

Great topic - hi-lights how A&A is a little too basic.  ie. not all hits should be equal - really, when would AAA blow every plane out of the sky?

I would propose to change the AAA rule for bases and industry that AAA does not kill but affects the accuracy of the attacker.  Defending installation rules a 1d6 and this is subtracted from the attacker’s roll.  
1d6-1 for fighters and tacB
1d6-2 for bombers
Roll an AAA dice for each attacking aircraft.

1942.2 SBR Black Elk hypothesis

Strategic Bomber
Attack 0
Damage 1D6, 1D6+2
Cost 5

Fighter
Attack 1
Defense 2
Cost 10

Break even point StB A0 C5, 1D6+2 damage vs Fg A1 D2:  21 StBs vs 30 Fgs: 0.700 StB/Fg
1StB D6+2 vs 1Fg D2: + 3.056 - 2.222= + 0.834 IPC damage/SBR12= +10.008
1StB D6+2 vs 2Fgs D2: +2.037 - 3.148 = -1.111 IPC damage/SBR9= -9.999 (Diff.: +0.009)
21 StB vs 30 Fgs:   0.700 StB/Fg
No FIT (Fighter Interception Threshold), always beneficial to Intercept.

Break even point StB A0 C5, 1D6 damage vs Fg A1 D2: 17 StBs vs 15 Fgs: 1.133 StBs/Fg
1 StB D6  vs 1Fg D2: + 1.944 - 2.222 = -0.278 IPC damage/SBR13 = -3.614
2 StBs D6 vs 1Fg D2: +4.861 - 3.056= +1.805 IPCs damage/SBR2= +3.610 (Diff.: -0.004)
17 StBs vs 15 Fgs: 1.133 StBs/Fgs
No FIT (Fighter Interception Threshold), always beneficial to Intercept.

Down below here is a different values doing SBR for 1942.2 and G40

Strategic Bomber in air-to-air combat SBR:
Attack 0
Bombard IC damage: D6 or 1D6+2

Fighter in air-to-air combat SBR:
Attack 1
Defend 2

IC’s AAA: @1 against each Strategic Bomber

1942.2 SBR HRules with StB A0 and Fg A1 D1 : damage 1D6 or 1D6+2

1 Strategic Bomber doing SBR against no interceptor

AAA roll = odds casualties

5/6 StB survived * 5.5 IPCs = +4.583 IPCs *3.5= +2.917
1/6 StB killed *5 IPCs = -0.833 IPCs

D6: +2.917-0.833= +2.084 IPCs
D6+2: + 4.583 - 0.833 = +3.750 IPCs damage/SBR

1 Strategic Bomber Att 0 doing SBR against 1 interceptor Def 2

Interceptor Fg roll/ AAA roll = odds casualties

2/66/6 = 12/36 1 StB killed by Fg
4/61/6 = 4/36 1 StB killed by AAA
4/6*5/6 = 20/36 No casualty at all.

Results:
Bombard on IC 20/36* ((1+2)+(6+2) IPCs)/2= +5.5 IPCs) = + 3.056 IPCs *3.5=+1.944
StB killed 16/36 *-5 IPCs = - 2.222 IPCs
1D6 vs 1D2: + 1.944 - 2.222 = -0.278
1D6+2 vs 1D2: + 3.056 - 2.222= + 0.834 IPC damage/SBR

D6 vs Fg D1: + 2.431 - 1.528 = +0.903
D6+2 vs Fg D1: + 3.819 - 1.528= + 2.291 IPC damage/SBR

1 Strategic Bomber Att 0 doing SBR against 2 interceptors Def 2

Interceptors Fgs roll/ AAA roll = odds casualties

20/366/6 = 120/216 1 StB killed by Fg
16/361/6 = 16/216 1 StB killed by AAA
16/36*5/6 = 80/216 No casualty at all.

Results:
Bombard on IC 80/216* ((1+2)+(6+2) IPCs)/2= +5.5 IPCs) = +2.037 IPCs *3.5= +1.296
StB killed 136/216 *- 5 IPCs = -3.148 IPCs
D6 vs D2: +1.296 - 3.148 =-1.852 IPCs
D6+2 vs D2: +2.037 - 3.148 = -1.111 IPC damage/SBR

D6 vs Fg D1: + 2.025 - 2.106 = -0.081 IPCs
D6+2 vs Fg D1 : + 3.183 - 2.106 = +1.077 IPC damage/SBR

1 Fighter Att 1 and 1 Strategic Bomber Att 0 doing SBR against 2 interceptors Def 2

Fighter roll/interceptors Fgs roll/ AAA roll = odds casualties

1/64/366/6 = 24/1296 1 Fg and 1 StB killed by Fgs vs 1 Fg
1/616/361/6= 16/1296 1 Fg killed by Fg and 1 StB killed by AAA vs 1 Fg
1/616/365/6= 80/1296 1 Fg killed by Fg vs 1 Fg
1/616/361/6 = 16/1296 1 StB killed by AAA vs 1 Fg
1/616/365/6 = 80/1296 No casualty vs 1 Fg

5/64/366/6 = 120/1296 1 Fg and 1 StB killed by Fg vs no casualty
5/616/361/6 = 80/1296 1 Fg killed by Fg and 1 StB killed by AAA vs no casualty
5/616/365/6= 400/1296 1 Fg killed by Fg vs no casualty
5/616/361/6 = 80/1296 1 StB killed by AAA vs no casualty
5/616/365/6 = 400/1296 no casualty at all

Results:
Bombard on IC: 960/1296 * ((1+2)+(6+2) IPCs)/2= +5.5 IPCs) = + 4.074 IPCs 3.5= +2.593
Killing 1 Fg: 216/1296 +10 IPCs = + 1.667 IPCs
Fg killed: 480/1296-10 IPCs = - 3.704 IPCs
StB killed: 96/1296 -5 IPCs = - 0.370 IPCs
StB & Fg killed: 240/1296* -15 IPCs = - 2.778 IPCs

D6 vs 2Fgs D2: +4.260 - 6.852 = -2.592 IPCs
D6+2 vs 2Fgs D2: + 5.741 - 6.852 = -1.111 IPCs damage/SBR

D6 vs D1: +4.503 - 1.690 = +2.813 IPCs
D6+2 vs D1: + 6.123 - 1.690 = + 4.433 IPCs damage/SBR

1 Fighter Att 1 and 1 Strategic Bomber Att 0 doing SBR against 1 interceptor Def 2
Fighter escort taking the casualty.
Fighter roll/interceptor Fg roll/ AAA roll = odds casualties

1/62/61/6= 2/216 1 Fg killed by Fg and 1 StB killed by AAA vs 1 Fg
1/62/65/6= 10/216 1 Fg killed by Fg vs 1 Fg
1/64/61/6 = 4/216 1 StB killed by AAA vs 1 Fg
1/64/65/6 = 20/216 No casualty vs 1 Fg

5/62/61/6 = 10/216 1 Fg killed by Fg and 1 StB killed by AAA vs no casualty
5/62/65/6 = 50/216 1 Fg killed by Fg vs no casualty
5/64/61/6 = 20/216 1 StB killed by AAA vs no casualty
5/64/65/6 = 100/216 no casualty at all

Results:
Bombard on IC: 180/216 * ((1+2)+(6+2) IPCs)/2= +5.5 IPCs) = + 4.583 IPCs 3.5= +2.917
Killing 1 Fg: 36/216 +10 IPCs = + 1.667 IPCs
Fg killed:60/216-10 IPCs = -2.778 IPCs
StB killed: 24/216 -5 IPCs = - 0.555 IPCs
StB & Fg killed: 12/216* -15 IPCs = -0.833 IPC

1Fg A1 1StB D6 vs 1 Fg D2: +4.583 - 4.166 = +0.418 IPCs
1Fg A1 1StB D6+2 vs 1 Fg D2: + 6.250 - 4.166 = + 2.084 IPCs damage/SBR

1Fg A1 1StB D6: +2.500 - 1.111 = +1.389 IPCs
1Fg A1 1StB D6+2: + 6.250 - 1.111 = + 5.139 IPCs damage/SBR

2 Strategic Bombers Att 0 doing SBR against 2 interceptors Def 2

Interceptor Fgs roll/ AAA roll = odds casualties

4/3636/36= 144/1296 2 StBs killed by Fgs
16/366/36 = 96/1296 1 StB killed by Fg and 1 StB killed by AAA
16/36*30/36= 480/1296 1 StB killed by Fg

16/361/36 = 16/1296 2 StBs killed by AAA
16/3610/36 = 160/1296 1 StB killed by AAA
16/36*25/36 = 400/1296 No casualty at all.

Results:
2x Bombard on IC 400/1296* ((2+4)+(12+4) IPCs)/2= +11 IPCs) = +3.395 IPCs 7=+2.160
1x Bombard on IC 640/1296 ((1+2)+(6+2) IPCs)/2= +5.5 IPCs) = + 2.716 IPCs 3.5=+1.728
2 StBs killed 256/1296 -10 IPCs = -1.975 IPCs
1 StB killed 640/1296* -5 IPCs = -2.469 IPCs
D6 vs 2 Fgs D2: +3.888 - 4.444 =-0.556 IPCs
D6+2 vs 2Fgs D2: +6.111 - 4.444 = +1.667 IPCs damage/SBR

D6 vs 2 Fgs D1: +4.863 - 3.056 = +1.807 IPCs
D6+2 vs 2Fgs D1: + 7.639 - 3.056 = + 4.583 IPCs damage/SBR

2 Strategic Bombers Att 0 doing SBR against 1 interceptor Def 2

Interceptor Fg roll/ AAA roll = odds casualties

2/66/36 = 12/216 1 StB killed by Fg and 1 StB killed by AAA
2/630/36= 60/216 1 StB killed by Fg
4/61/36 = 4/216 2 StBs killed by AAA
4/610/36 = 40/216 1 StB killed by AAA
4/6*25/36 = 100/216 No casualty at all.

Results:
2x Bombard on IC 100/216* ((2+4)+(12+4) IPCs)/2= +11 IPCs) = +5.093 IPCs 7=+3.241
1x Bombard on IC 100/216 ((1+2)+(6+2) IPCs)/2= +5.5 IPCs) = + 2.546 IPCs 3.5=+1.620
2 StBs killed 16/216 -10 IPCs = -0.741 IPC
1 StB killed 100/216* -5 IPCs = -2.315 IPCs

2 StBs D6 vs 1 Fg D2: +4.861 - 3.056= +1.805 IPCs
2 StBs D6+2 vs 1 Fg D2: +7.639 - 3.056 = +4.583 IPCs damage/SBR

2 StBs D6 vs 1 Fg D1: +5.347 - 2.361= +2.986 IPCs
2 StBs D6+2 vs 1 Fg D1: +8.403 - 2.361 = +6.042 IPCs damage/SBR

@Baron:

Summary:
StB A0 C12 vs Fg A1 C10
1 Strategic Bomber doing SBR against no interceptor
D6+2: + 4.583 - 2 = +2.583 IPCs damage/SBR run
D6: +2.917-2= 0.917 IPCs

1 Strategic Bomber A0 doing SBR against 1 interceptor D1
D6+2: + 3.819 - 3.667 = + 0.152 IPC damage/SBR run
D6: + 2.431 - 3.667 = -1.236

1 Strategic Bomber A0 doing SBR against 2 interceptors D1
D6+2: + 3.183 - 5.056 = - 1.873 IPCs damage/SBR run
D6: + 2.025 - 5.056 = -3.031 IPCs

1 Fighter A1 and 1 Strategic Bomber A0 doing SBR against 2 interceptors D1
D6+2: + 6.123 - 5.334 = + 0.789 IPC damage/SBR run
D6: +4.503 - 5.334 = -0.831 IPCs

2 Strategic Bombers A0 doing SBR against 2 interceptors D1
D6+2: + 7.639 - 7.334 = + 0.305 IPC damage/SBR run
D6: +4.863 - 7.334= -2.471 IPCs

1 Fighter A1 and 1 Strategic Bomber A0 doing SBR against 1 interceptor D1
D6+2: + 6.250 - 3.667 = + 2.583 IPCs damage/SBR run
D6: +2.500 - 3.667 = -1.167 IPCs

2 Strategic Bombers A0 doing SBR against 1 interceptor D1
D6+2: + 8.403 - 5.666 = + 2.737 IPCs damage/SBR
D6: + 5.347 -5.666= -0.319 IPCs

Comparison of this HR with Triple A SBR for 1942.2

1942.2 SBR HRules with StB A0 and Fg A1 D1 : damage 1D6+2   Triple A SBR for 1942.2: damage 1D6

1 Strategic Bomber doing SBR against no interceptor             1 StB doing SBR without interceptor
Sum: + 4.583 - 2 = +2.583 IPCs damage/SBR run                Sum: +2.917 - 2 = +0.917 IPC damage/SBR run

1 Strategic Bomber A0 doing SBR against 1 interceptor D1     1 StB A1 against 1 Fg D1
Sum: + 3.819 - 3.667 = + 0.152 IPC. damage/SBR run        Sum: +3.69 - 3.667 = + 0.023 IPC damage/SBR run

1 Strategic Bomber A0 doing SBR against 2 interceptors D1       1 StB A1 doing SBR against 2 intercepting Fgs D1
Sum: + 3.183 - 5.056 = - 1.873 IPC. damage/SBR run              Sum: + 2.025 - 5.056 = - 3.031 IPCs damage/SBR run

1 Fighter A1 and 1 Strategic Bomber A0 doing SBR against 2 interceptors D1       1 StB & 1 Fg A1 doing SBR against 2 intercepting Fgs D1
Sum: + 6.123 - 5.334 = + 0.789 IPC damage/SBR run              Sum: +6.155 - 5.33 = + 0.825 IPC damage/SBR run

2 Strategic Bombers A0 doing SBR against 2 interceptors D1         2 StBs A1 doing SBR against 2 intercepting Fgs D1
Sum: + 7.639 - 7.334 = + 0.305 IPCs damage/SBR run              Sum: +8.195 - 7.334 = + 0.861 IPC damage/SBR run

1 Fighter A1 and 1 Strategic Bomber A0 doing SBR against 1 interceptor D1       1 StB & 1 Fg A1 doing SBR against 1 intercepting Fg D1
Sum: + 6.250 - 3.667 = + 2.583 IPC damage/SBR run         Sum: + 5.973 - 3.667 = + 2.306 IPCs damage/SBR run

2 Strategic Bombers A0 doing SBR against 1 interceptor D1         2 StBs A1 doing SBR against 1 intercepting Fg D1
Sum: + 8.403 - 5.666 = + 2.737 IPCs damage/SBR run         Sum: +8.403 - 5.666 = + 2.737 IPCs damage/StB

I bumped this up because there is a similar thread to compare with.

@toblerone77:

What is so hard to understand?

Three STBs make a night raid. The defender rolls three dice and scores 3 hits by a miracle.
So 1.5 hits rounded up, it’s two hits, rounded down it’s one hit. The remaining attackers roll for damage and the total is halved to the nearest IPC worth of damage up or down.
If some one were to use the HR their group could decide.

Want simpler rolls for AA guns during a night raid? Easy use D12 dice and have them roll at 1. That equates .5 pips on a D6 die. Easy.

You got it man!!!  :-o  I completely forgot about this possibility of using D12.

I believe you already play with D12, so it won’t be difficult to introduce it in your game.

Day and night AAA will be distinct this way:
Day AAA, use 1 on D6 or “1” or “2” on D12.
For an average casualty of 2/12 * -12 IPCs = - 2 IPCs/StB run.

Night AAA, use “1” on D12.
For an average casualty of 1/12 * -12 IPCs = - 1 IPC/StB run.

One casualty roll is always better. And you get your half casualty average for Night B.

The last point remaining is on damage roll of 1 StB.
Day time SBR:
D6+2 (avg 5.5) * 5/6 = 27.5 IPCs/6 =      4.583 IPCs/StB - 2 IPCs = 2.583 IPCs/run 100%
D6 (avg 3.5) * 5/6 = 17.5 IPCs/6 =          2.917 IPCs/StB - 2 IPCs = 0.917 IPCs/run 35.5%

Night time SBR:
D6 (avg 3.5) * 11/12 = 38.5 IPCs/12 =    3.208 IPCs/ StB  - 1 IPC = 2.208 IPCs/ run  85%
D3+1 (avg 3) * 11/12 = 33 IPCs/12 =      2.750 IPCs/ StB   - 1 IPC = 1.75 IPCs/ run  68%
D6-1 (avg 2.5) * 11/12 = 27.5 IPCs/12 = 2.292 IPCs/ StB  - 1 IPC = 1.292 IPCs/ run 50%
D3 (avg 2) * 11/12 = 22 IPCs/12 =          1.833 IPCs/ StB  - 1 IPC = 0.833 IPCs/ run  32%

Last Tob77 version 4 out 6 doing 2 IPCs damage:
4/6 * 2 IPCs * 5/6 = 40 IPCs/36 =           1.111 IPCs/StB - 2 IPCs = -0.889 IPCs/run - 34%

AA gun hits halved rounded up version for 2 StBs:
D3+1(avg 3)*11/36=33 IPCs/36=      +0.917 IPCs/ 2StB
D3+1(avg 3)225/36=150 IPCs/36= +4.167 IPCs/ 2StB - 3.667= 1.417/2= 0.709 IPCs/ 1 StB run 27%
                                                                            or -1.834 IPCs/ 1 StB

AA gun hits halved rounded down version for 2 StBs:
D3+1(avg 3)*1/36=3 IPCs/36 =         +0.083 IPCs/2StBs
D3+1(avg 3)235/36= 210 IPCs/36= +5.833 IPCs/2StBs -0.333= 5.583/2= 2.792 IPCs/1 StB run 108%
                                                                             or -0.167 IPCs/ 1 StB

1 StB against AAA repulse @2:
D3+1 (avg 3) * 4/6 = 12 IPCs/6 =      2 IPCs/ StB   - 0 IPC = 2.00 IPCs/ run  77%

Rolling damage first 1 to 4 IPCs, 5 or 6 is a miss and get under AA fire @1:
1+2+3+4+0+0=10/6 IPCs =         + 1.67 IPCs - [(12 IPCs*2/36)= 4/6] .67 = 1 IPC/ run 39%

Night time bombing played as Convoy disruption on 1-3 damage (4-6= 0), no AA fired:
1+2+3+0+0+0=6/6=                     +1 IPC             - 0 IPC = 1 IPC damage/ run 39%

I will summarize 3 ways of doing G40 SBR with Fgs escort and interceptor which could be use as 3 different historical tactics by the attacker trying to whether reduce the enemy’s air power or the IC production while better protecting StBs.

First, is A) the Close-Escort Mission, which is done as OOB SBR.

Second, is B) the Offensive Counter-Air Mission, which gives Fgs A1 first strike and D1 but an opportunity to roll a second time against bombers in A-to-A dogfight.

Third, is C) the Night Bombing Mission, in which Fgs units cannot participate neither offense nor defense.

A) Close-Escort Mission, as OOB
Air-to-Air phase
All attacking planes (Fg,TcB, StB) inside roll A@1.
All defending Fgs roll D@1.
Remove casualties.

Bombing phase
Proceed to SBR over IC, NB or AB.
AAA fires @1 against StB and TcB
Then roll damage as OOB: StB D6+2, TcB D6.

B) the Offensive Counter-Air Mission, Fgs are actively chasing intercepting Fgs
Air-to-Air phase
First cycle:
All attacking Fgs can roll A@1. Remove casualties.
All other attacking planes (TcBs, StBs) roll A@1.
All defending Fgs roll D@1.
Remove casualties.

Second cycle:
Then, defending Fgs roll D@1 a second time inside the A-to-A phase.
And all hits in this second cycle are allocated first to bombers, if any. Remove casualties.
All surviving attacking Fgs can now roll A@1 in this second cycle. Remove casualties.

Bombing phase
Proceed to SBR over IC, NB or AB.
AAA fires @1 against StB and TcB
Then roll damage as OOB: StB D6+2, TcB D6.

C) the Night Bombing Mission

Night Bombing phase
Proceed directly to SBR over IC, NB or AB.

AAA fires @1/D12 against StB and TcB or
@Baron:

“Historical” light projector “search and spot” in the night sky:
Each StB/TcB is spotted on a 3 or less.

Then roll to A@1 on spotted StB with AA gun: on “1” roll a spotted StB/TcB is destroyed.
(Work as the usual in-built AAA in IC.)

All surviving StBs bombard roll for damage: (1D6+2)/2 rounded down against IC.

All surviving TcBs bombard roll for damage (1D6)/2 rounded down, minimum 1 IPC, against IC.

@Baron:

Trying to depict the two escorting fighters tactics with an additional HR inside the actual G40 OOB SBR escort and interception rules, I come to this:
It would be an attacker’s choice whether he chooses the close-escort mission or an Offensive Counter-Air mission.

Close-escort mission:
When playing as OOB SBR (all @1), it is like Fgs are providing close-escort to bombers.

Offensive Counter-Air mission version A:
Air-to-Air combat phase in SBR with Fgs actively chasing intercepting Fgs :
All attacking Fgs can roll A@1. Remove casualties.
All other planes (TcBs, StBs and defending Fgs) roll A/D @1. Remove casualties.
Then, defending Fgs roll D@1 a second cycle inside the A-to-A phase.
And all hits in this second cycle are allocated to bombers. Remove casualties.

Proceed to SBR over IC, NB or AB.
AAA fires against StB and TcB.
Then roll damage as OOB.

I think it is a way to simulate the two tactics at a Strategical level game.
It can give a better historical feel and variation of attacking SBR strategy, at least on this point, than just the actual OOB.
Attacking Fighters get a preemptive strike, and any hit is also a way of protecting bombers,
while defending Fgs get special treatment on the second cycle: a second chance to make a hit @1 on bombers specifically.

In addition, maybe the comparison can provide us a way to explain why Fgs are not better than bombers and stay A/D @1:

the escorts are restricted in their role, they have limited ability to score hits, however, by staying close to the bombers they make it more likely that they will be taken as a casualty, the losing player gets to decide their losses.

If on the other hand, the escorts are allowed to pursue interceptors, they are more effective at shooting them down, but in that case, they are not as effective at protecting the bombers, therefore, the interceptors get to choose their hits.

On one part, we can say that for escorting Fgs providing cover impaired all of them, moving at a slower pace and keeping an eye on bombers.
On the other part, defending interceptors are also somewhat impaired by the defensive formation of Bombers and Fgs, so they didn’t get any advantage of the “flying over homeland territory” would normally provide against less manoeuvrable target.
So, after all, Fgs get A1D1 while the rest of TcBs and StBs just getting A1 but D0.
(And based upon IPC cost, it is just enough to say a Fg unit is slightly better than the rest.)

In summary, about Offensive Counter-Air mission :
The first cycle is a regular for defending planes, because they have to scramble and can be caught off guard by attacking Fgs. They get the superiority once in the air.

The first cycle of SBR interception phase is as OOB, except for attacking Fgs.
The second cycle is for surviving defending Fgs which get an advantage since there is no close-escort Fgs for Bombers.

In addition, this can provide a distinctive ability toward Fgs vs TcBs.

This HR was only a way to depict in game term this historical tactics, but if there is already a way to rationalize it inside OOB rules, feel free to develop it, so it can add a layer of historical depiction and feeling toward Fighter unit.

EDIT:
Here is another way of depicting this Offensive Counter Air-Mission version B:

What could happened historically?
A typical example from the Battle of Britain:
A flight of Ju88, He111 and Do17 Bombers sent in to bomb British ABs with a group of 109’s in support.
A group of Spitfires and Hurricanes comes up to intercept.
The 109s jump the interceptors.
The interceptors try to blow by the escorts and get at the bombers.

Escorts are flying in ahead of the Bombers and meet the interceptors before the wing of Bombers.

Escorts and Interceptors fight one round.
Escorts and interceptors roll on A/D@1. Remove casualties.
Then, escorting and intercepting Fgs and Bombers all roll on A/D@1. Remove casualties, but Bombers are taken as casualties.
Then, AAA fire, remove casualties.
Proceed to bombing damage.

i like this idea. this idea could work well with using it as a tech such as stategic targeting. or added to heavy bomber tech. this will also could come in handy if HBG starts making light, meduim and heavy bombers

I have changed my Strategic Bombing rule.

A bomber bombing a factory for the first time recieves 1xd6 to damage enemy industrial complexes however, on a second raid when the same nation attacks the same enemy factory, all surviving bombers use 2xd6 and may choose the highest result rolled to inflict damage. During a third raid from the same nation against the same enemy factory, surviving bombers roll 3xd6 each and may choose the highest result rolled to inflict damage. Bombers receive 4xd6 each for the forth raid and 5xd6 each for the fifth (5 dice is the maximum each bomber may roll).

Each bomber may only apply 1 dice result to damage factories.
Each surviving bombers dice must be rolled separate from other surviving bombers dice.

Interesting.