Of elves and their skills for battle

[Eol]

is enough to be full of rage to win at the battlefield

As soon as you do that, you have lost the battle. Rage does nothing but give that fun little hormone called Adrenaline. That does not give you instantanious victory.

It is obvious no one has served in any form of military( especially myself!) but common sense should tell you that any emotional burst that is not controled will hinder your forcus. Once that happens, the opponant will have the chance to srike you down during that moment.