Jimmy Thach and the training cycle

John "Jimmy" Thach provides a concrete American counterexample to Japan's practice of retaining veteran pilots in combat. By the end of the war, the fighter pilot associated with the Thach Weave was serving in staff, training, and other roles that spread his operational experience. This removed an expert from some frontline sorties, yet multiplied what other aviators and planners could learn from him. Rotation through instruction and staff appointments turned individual skill into institutional memory. The later survival of a few Japanese veterans becomes more significant in this context because their experience remained concentrated at the front instead of strengthening replacement pilots.