Japanese side:

Few months since after Attack on Pearl Harbor, Yamato is fully commissioned, ready for battle Yamato is successfully constructed, Yamato isn't the only one, Yamato's sister ship Musashi, They made Yamato-class battleships.

Meanwhile in a hills

Akame is walking towards to their house to inform them about Yamato and it's commission.
Akame: Ma'am We have some news.
Najenda: What is it? She asked her

Then She told the news about Yamato that was commissioned and they finished the Yamato-class battleships.

Najenda: our problems becomes more than we thought

Lubbock: it's like the new Empire again
Najenda: but we must keep cautious for now
As she finished the discussion. Then Soldiers from Military police from Imperial Japanese Navy and Army

They're Informed them about American plans: Bombing on the Marshall Islands

Meanwhile

American side:

Mr. Layton told the admiral about Pearl Harbor a greatest failure and American history

Meanwhile in American fleet (carriers, battleships, cruisers, destroyers, planes)
Commander Donald: alright we have a order to launch now, All pilots get ready. The planes are Dive bombers Douglas SBD Dauntless.

Vought F4U Corsair

F6F Hellcat

SB2C Helldiver

And Torpedo bombers Grumman TBF-1C Avenger.

Aaron Jackson Pilot of TBF-1C Avenger and his 2 gunners Sam Wilson and Jack Sterling and his friend Diego Dawson Pilot of SBD Dauntless and his Gunner Greg Marcos and Diego's Brother Skipper Dawson Pilot of Vought F4U Corsair, his best friend Joe Baldwin Pilot of F6F Hellcat and finally Jonathan Myers Pilot of SB2C Helldiver

Aaron: Diego, you ready for this.
Diego: Yep, Always be.
Aaron: Alright, be careful.

He nodded before they manned their planes and then they take off

[There should be a GIF or video here. Update the app now to see it.]

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I'm sorry that the story short, so please don't mad at me ok i promise.