Nobody has mentioned the delay in strategic operations the lack of Ultra would have caused. The allies were extraordinary cautious in their operations, especially after the early defeats and which led to the the myth of the German ubersoldier.
Reading the German mail and their numbers and intentions allowed them to undertake operations with a reasonable confidence of success. Without that, they would have turtled or at the very least hedged their bets.
Without ultra knowledge, the Russians experienced some painful setbacks until the Germans were decisively weakened.
Without ultra knowledge, the western allies are going to experience some nasty surprises of their own and heavy losses aren't going to inspire Churchill & Co to land any sooner in France....
Reading the German mail and their numbers and intentions allowed them to undertake operations with a reasonable confidence of success. Without that, they would have turtled or at the very least hedged their bets.
Without ultra knowledge, the Russians experienced some painful setbacks until the Germans were decisively weakened.
Without ultra knowledge, the western allies are going to experience some nasty surprises of their own and heavy losses aren't going to inspire Churchill & Co to land any sooner in France....