Shows what it really was: a huge slaughterhouse
The tragic last sortie of the Yamato accomplished nothing, but thousands of killed ordinary soldiers on the Japanese side and the loss of the biggest battleship ever built, a fine cruiser and some destroyers. The "enemy" losing a dozen or so of aircraft, losses which were neglectable.
So war is cruel, painful and meaningless. Japan lost, most of its cities were wiped out. Because so few Japanese soldiers surrendered and prefered death above surrender, lessons learnt were also few.
In this respect the Japanese movie about the Yamato is great. It shows the life of common soldiers as normal human beings, being sacrified for the "honour of their country".
The beautiful music gives a special thrill to this movie.
The rebuilding of a part of the Yamato shows us how this giant really looked: impressive. But weak against its foes: the huge and very effective US air force.
The time of the battleship ended some years earlier at Taranto, the sinking of the most famous battleship of all time: the brand new Bismarck, the later sinkings of the Prince of Wales, Roma, Musashi and Tirpitz, which were all destroyed out of the air.
In fact most sunk battleships in WWII were destroyed by enemy air action. The big ship against ship duels were scarce.