The Chinese officer brought information regarding Chinese upcoming participation in the Korean war and the fact that they are going to secretly cross the Yalu River on 19 October to the CIA officer who was in charge of moving them to the US. This highly important information was moved forward and change history overnight. After a very long debate it was decided to ambush the Chinese. Tanks were hidden near the river and military strategists were brought on board to deal with this new threat to success in the Korean war.