He will not realize our objective is Midway until 24 hours later, when Admiral Nagumo's carriers strike the island and destroy the American planes and shore batteries.
10 seconds sound clip from the Midway (1976) movie soundboard.
You can hear this line at 00:22:06.292 in the Blu-ray version of the movie.
Quote context
[...]
- Rochefort's just decoded a transmission from Kwajalein to Yamamoto's fleet headquarters.
- Reads, AF is having trouble with its freshwater condenser. AF has to be Midway Island.
- Be at my office at 0500, Matt. I'm calling in the whole staff.
- This is how I expect the battle to develop.
- The northern force, under Admiral Hosogaya, will strike here in the Aleutians as a diversion.
- To keep Nimitz's attention away from our main objective.
- At that hour you move in, Kondo, with your invasion forces.
- I have studied his tactics and I have studied the man.
[...]