The Dangers of Reading Japanese Messages

By April, 43, which is our time period now, Layton's people are practically reading about 85 to 90% of the Japanese messages that are being sent through. So we focused on the ones that had certain codes in them that we knew related to people like Admiral Yamamoto. And when Leighton had mentioned post-war that they knew exactly the Yamamoto's code or code word or code name or whatever it was, they knew exactly. They just didn't know exactly what he was going to do next until they decipher the message that leads to the mission that we're going to talk about.