Japanese Sailors

Man the actors portraying sailor play-fighting a huge battleship sure do a lot of shouting.  What's the French word for esprit de la guerre?  Anyway.  Lots of carrying on.  I wonder how it was in real life on a Japanese ship?  Same kind of shouting?  Or less enthusiasm, and more professionalism, and let the army do the banzai shouts, the Navy will do their job more calmly and with less dramatic heroics.