I believe the first two lines in the first verse are relating to those who choose to enlist. The first two lines in the second verse are relating to those who aren't fighting. The chorus relates to 'Murica's way of being unstoppable in starting wars.
I believe the first two lines in the first verse are relating to those who choose to enlist. The first two lines in the second verse are relating to those who aren't fighting. The chorus relates to 'Murica's way of being unstoppable in starting wars.