New Zealand All Blacks haka

So, before battles, Maori warriors would do a chant and ritual dance to pump themselves up and intimidate their opponents. This is called a "haka".

The New Zealand national rugby team thought this was a good idea.

But, see, other nations ALSO have war dances. Tongan warriors have their own, the sipi tau. And, of course, the way that you counter a war dance is to do your own: