What is the meaning of James Blunt's song "no bravery?" What is the song about?

I was
unfamiliar with the song so I did some preliminary research. I found the lyrics, and also found
a video made with that song as the background. If you are unfamiliar also, I suggest you do the
same. I believe "he" is symbolic of the American soldier in Iraq. The song questions
our country's motives for being there, and interprets the soldier's current attitudes toward
being there. I get the impression the narrator thinks the soldiers are no longer sure of the
reason either. Instead of feeling "brave," they are merely
"sad."

 I also think this song leaves a great deal of room for
personal interpretation. Maybe look at it in a variety of contexts. Good luck.