After World War II, another attempt was made to get the Army and Navy to work together. One of the major areas of cooperation was to have been wargaming. The National War College turned from the study of war to an emphasis on politics and management. The Army never tried to retrieve its wargaming program, and wargaming disappeared from Army schools for over thirty years. It also disappeared from the National War College.
Flag officers are an entirely different breed in the military.
While they don't walk on water, many of their subordinates are encouraged to believe the super brass are capable of similar wonders. All this wargaming that allowed lieutenant colonels to command armies generated the idea for a school for generals, once they became generals. But this never really got off the ground and eventually the army came back to the War College to get one going for their own newly minted generals. While not the only reason for keeping wargaming alive at the Army War College, it was a big help. I was asked to set this center up and serve as its first director.