The soviets are fantastic at the old fashioned, boots on the ground kind of intelligence. The british had something called an enigma machine, which is like a little coding typewriter that you had to have on both ends of a coded message to decode it. There are a researchers and scientists in poland who dissected some of the german cryptological equipment,. Then they worked with the french, then when the war started, they transferred their information to the british. Some people will say it shortened the war by a lot, others by a little. You can't argue with certain things though, that you just have to look at as enormous.