[Homer_J_Simpson]

It looks to me like the information in the Nimitz diary on Japanese fleet movements had to come from JN25 decrypts.

Wherever the info came from, the oiler group that departed Tawi Tawi for Surigao Straits yesterday could be in for an exciting trip.

[InMemoriam]

The plan for D-Day, known as the Neptune Monograph, was distributed on a need-to-know basis. The copy shown at the link was given to the tides forecaster for D-Day, who went on to a career as a geology professor.