basically SBR, strategic bombing raids as we call them.
Attack a players ability to produce.
It used to be, you flew the bomber over their factory, their aa tried to shoot you down 1 shot at 1/6 for each bomber.
If they missed, you rolled a dice for each bomber. Say you rolled 4. they IMMEDIATELY lost 4 ipc’s/dollars to the bank.
People could exploit this rule with Technology or hordes of bombers. So SBR’s evolved.
The rule changed so you could only do as much damage as double the VALUE of the territory the factory was on. So a factory in italy say, worth 6, could only be bombed for $12 a turn (per country).
Then the rules changed AGAIN. Now, you bomb the amount of units that can come from a factory, up to double the territories worth.
So germany at 10 ipcs a turn, can only create 10 units of any kind from it’s factory. Now when you bomb it, you put a token down for whatever you roll. Say you bombed it for 6, Germany can now only build 4 units there.
However on their turn, for 1 ipc, the germans can remove 1 damage token.
This is better, because now you can choose to leave some damage if you want. say germany just wants to build 7 tanks, you would only spend $3 to fix you factory, to allow it to build 7 units.
Escorts is a whole new tool too, that allows your planes to defend your factories as well as accompany SBR’ing bombers. but someone else can explain that.
Basically, rule of thumb for SBR.
1. if there are fgt escorts on the territory, DONT attack.
2. if your bomber is needed in a more important battle, use it there instead. a maximum of 6 damage, is nothing compared to multiple hits, in a serious naval battle over even 2 rounds of combat.
3. if they have no AA gun, hit the factory.
4. if you have NO other viable targets for your bomber, and you are the allies Bomb germany.
5. Try to NEVER sbr as the axis, save for a few scenario’s. That said, as Axis always SBR moscow or Caucusus.
6. dont send escorts with bombers to fight escorts. its always bad for business.
SBR is worthwhile, if your lucky, or you know when to/when not to, and how often to.
Hope that helps.