@ogrebait:
Second, money plowed into bombers is not being put into other units, particularly ground units that can take territory and, in the case of certain countries, naval units to get your ground units to the fight. Thus, I feel there is a natural cap on the number of bombers that anyone should be buying.
In the case of UK or USA, they don’t need any defenses as their Bombers can sink fleets. I can easily see Britain hammering Germany/Italy with Bombers and nothing else, while still making a difference.
@ogrebait:
Finally, in general I do not believe that SBR’s are the best use of one’s bombers. As already pointed out, the expected net IPC gain is only 1 IPC per bmbr per IC (and that doesn’t count the impact of the damage cap on ICs). In any other battle where a bmbr is augmenting an attack, and thus relatively free from loss, the expected net IPC damage is at least two (hit on inf), but can go much higher.
You are completely wrong in that regard. In particular, your calculations are all wrong. You use net gain for bombers, but net damage for ground forces. If you look at it from a net damage perspective, Bombers are expected to do roughly 3 damage per battle when using SBR, and taking 2. In a normal battle, their damage is equal to Rounds*(2/3)*(average unit value), their damage taken is 2 normally plus extra if they run the risk of being destroyed by regular fire. Assuming 2 rounds and Infantry, a Bomber deals an average of 4 damage, only a marginal increase. They get better damage at Sea, but are more likely to be destroyed or have expensive units destroyed in their stead.
However, you also misses another key aspect. In order for UK and USA to attack with Bombers conventionally, they must also have ground forces to take the hits, transports to carry them, and naval units to protect them. Once you factor in those costs, the advantages of using Bombers conventionally vanishes.
@ogrebait:
That being said, the average expected gain/loss often goes out the window when a key objective must be taken, or a well-timed SBR can support one’s overall strategy. However, buying lots of bombers and relying on SBRs to carry the day strikes me as a less than optimal strategy.
I view Bombers as vital for finishing opponents, because SBR cripples their turtling capacity. If Germany is down to 30 or so IPCs, then they are going to start dropping 10 Infantry a turn until Japan hulk smashes their enemies. SBR them to the max, and they can only build 4.