I bow to the popular will on the selection of this song. My original favorite from Iron Maiden was Run to the Hills from Number of the Beast. However, I realize that a song about fleeing is, perhaps, not the best motivator when one needs to make a stand. Truthfully, any song from this band will get my blood up for a good fight with the undead, and The Trooper is a good one.
The Bugle sounds and the charge begins
But on this battlefield no one wins
The smell of acrid smoke and horses breath
As I plunge on into certain death.
You'll still hear this played on the radio, but it rings of cliché. It is fashionable among the younger generation to make fun of this song, but if I'm alone and it comes on, I do puff out my chest and look for the nearest weapon at hand.