This story is amazing. The story of US war games seems to commonly be "Yeah the Read Team won but..." and no changes are made. Maybe those are just the stories I hear.
It's also interesting to consider if the Japanese attack on Pearl Harbor would have happened if it weren't for our own dress rehearsals we carried out in front of the Japanese. Maybe war games are a bad idea when they're too big to keep secret and you're too politicized to integrate the lessons. Admiral Yamamoto didn't have to worry about upsetting US Navy top brass. He was able to benefit from our lessons, even if we weren't.
It's also interesting to consider if the Japanese attack on Pearl Harbor would have happened if it weren't for our own dress rehearsals we carried out in front of the Japanese. Maybe war games are a bad idea when they're too big to keep secret and you're too politicized to integrate the lessons. Admiral Yamamoto didn't have to worry about upsetting US Navy top brass. He was able to benefit from our lessons, even if we weren't.