Revealing mistake: Utility poles are visible in the scene of the Japanese aircraft carrier launching planes for the first attack on Midway.
Revealing mistake: In virtually every shot of the flight deck looking up at the fighters and bombers overhead attacking the U.S. ships, the anti-aircraft guns show the red paper caps of the blanks rather than pointed bullets.
Revealing mistake: Still another "Recycled Footage" sighting, plus a double error in one: A scene has a truck blown up during the "attack" on Midway by a Japanese Fighter Plane. Same footage (a bit cut for time) from "Tora! Tora! Tora!" and Midway is small enough that trucks of that size weren't used on the Island.
Revealing mistake: Just before the Japanese planes were launched, you can see that the maintenance workers for the planes weren't moving. They were just statues.
Revealing mistake: Probably another instance of the recycled footage issue with this film. When the Japanese planes begin their attack on Midway Island a wide shot shows many of the Japanese planes with torpedoes attached to them. Shouldn't they all have bombs instead of torpedoes?
Revealing mistake: When the PBY is leaving Midway to begin the reconnaissance operation a long stretch of land is passing by in the background. The same stretch of land is earlier when Admiral Nimitz lands at Pearl Harbor indicating the same location was used for two different areas in the film.
Revealing mistake: When Admiral Nagumo and Rear Admiral Kusaka walk onto the bridge of the Akagi for the first time while the ships are still in Hiroshima Bay look closely at the bay in the windows, it's obvious the background is a matte painting, the water isn't moving.
Answer: It's shown in the original 4 hour movie. Most of the scenes from the Coral Sea Battle are cut from this version and the battle is referenced, but never really shown.