Before the Battle of Midway, Japanese planners held a three-day retreat with repeated war games in which they repeatedly lost.

“in particular where the japanese before the battle of midway did a bunch of war games they did like a three-day retreat where they like war gamed it out a bunch of times and then they kept losing and then they they would they would sort of break the game they would like re resurrect their aircraft carriers after they died they would like re-roll the dice on like whether the americans succeeded when they succeeded so that you know they would sample until you know the americans strikes failed”