In 1942, Admiral Yamato of Imperial Japanese Navy presided over a wargame of upcoming battle in/around Midway, before heading out to the famous Midway Battle.
He was dead set on going through with the attempted landing on the Midway Island. There were ones below him who thought it wouldn't succeed.
The wargame showed the invasion wouldn't succeed. Admiral Yamato (or his aides?) brushed aside Japanese loses and even brought back Japanese carriers that got sunk in the wargame (basically cheated) to basically force a victory for the Japanese fleet.
And of course Japanese fleet was defeated massively. US Navy got few critical lucky breaks but the Japanese wargame predicted a defeat for Japanese fleet.
He was dead set on going through with the attempted landing on the Midway Island. There were ones below him who thought it wouldn't succeed.
The wargame showed the invasion wouldn't succeed. Admiral Yamato (or his aides?) brushed aside Japanese loses and even brought back Japanese carriers that got sunk in the wargame (basically cheated) to basically force a victory for the Japanese fleet.
And of course Japanese fleet was defeated massively. US Navy got few critical lucky breaks but the Japanese wargame predicted a defeat for Japanese fleet.