The weasels and the mice were at war and the mice kept on losing.
They thought that this might be due to the fact that they were not well organised and disciplined and also they had no leaders.
So the mice appointed some generals and to set themselves apart from the soldiers, the generals made themselves helmets decorated with long horns.
The next battle was won by the weasels again. And the mice only saved themselves by running into their burrows but the generals could not get in because of the horned helmets, so they were all eaten by the weasels.