Definitely Luftwaffe was getting hammered but considering the effort for the RAF to stay in the battle everything was put in the battle if not 150%.

Actually I´m always a bit sad about "we can afford the losses " part. What does that exactly mean? We can cover the losses (?) by what level? 1:1 ,2:1....?

The pilots taking the position of the lost ones are always fresh and probably get killed more easily than the experienced crews. So losing pilots is always making your fighter force more vulnerable, I think. And estimating that is more like flipping the coin. No matter what air force.

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