TheCodeBreakers
addressed to Midway after June 5; as General Marshall later said, "that
seemed a little bit too thick." Furthermore, Nimitz himself warned of
Japanese trickery when arranging for identification by radio in his
Operation Plan 29-42: "The Japanese are adept at the practice of
deception. Have authenticators ready for use when needed. Small craft
and aircraft except patrol planes use two alternate letters from the
expression: 'Farmer in the dell.' Example: RE or EL or NH." Hence Theobald
disbelieved the intelligence supplied him that the Japanese were going
just to bombard Dutch Harbor but to seize Attu and Kiska. He deployed
his force to prevent what he was convinced would be an invasion of
Dutch Harbor. Unfortunately, this disposition deprived him of any
opportunity to fight when, on the morning of June 3, right on schedule,
the Japanese did just what the cryptanalysts had said they would do and
bombed Dutch Harbor, inflicting considerable damage. They escaped
unmolested.