The primary difference that Enigma made was shipping to Russia and the UK. It’s likely it would have hurt both, but once the escort carriers started showing up

The primary difference that Enigma made was shipping to Russia and the UK. It’s likely it would have hurt both, but once the escort carriers started showing up in the Atlantic, the ability to operate subs would have gone away anyways. In the pacific, not a chance. The soviets rolled the Kwantung army at the end of the war, but that’s because it was stripped of all it’s assets well before the soviets showed up, as the Japanese desperately tried to re-enforce islands that the Americans later isolated and island hopped and starved into submission by virtue of the “Big Blue Fleet”. The atomic bombs may not have ended the war, but ending the war with a invasion or a starvation blockade required a massive naval armada, and the Soviets had nothing. The Brits barely were able to operate in theater. Engima’s impact on the battlefield was much more muted then the submarine war especially compared to Purple / Hypo / Market Garden and The battle of the Bulge where both lulled into disaster by the lack of enigma intelligence. It did play a positive role in Africa and on D-day (where it was most useful in revealing fortifications on the beaches), but it was not decisive there. Engima never made it’s way to the pacific. In the pacific, Corel Sea, Midway and the assassination of Yamamoto where all predicated on decrypted secrets, but this was a completely separate effort from Bletchley Park.