The lyric describes someone who has found his soldier who is so far away, and who also makes his head spin around.
It is not clear if the girl is metaphorically a soldier or is actually a member of the military. Likewise it may be that she is geographically distant, or it could be that far away is an expression of how distant from the norm the soldier girl is.
It is anatomically impossible for the head of the person who has the soldier girl to be literally rotating, so we can take that as an expression of astonishment at the condition of the soldier girl.
The lyric describes someone who has found his soldier who is so far away, and who also makes his head spin around.
It is not clear if the girl is metaphorically a soldier or is actually a member of the military. Likewise it may be that she is geographically distant, or it could be that far away is an expression of how distant from the norm the soldier girl is. It is anatomically impossible for the head of the person who has the soldier girl to be literally rotating, so we can take that as an expression of astonishment at the condition of the soldier girl.