I was under the impression that this was played without a capo using the same chords in a lower 
octave. But in the Ballad of Shovels and Rope documentary, Mike's playing it with a capo on the 4th. 
It's possible they ended up playing it open on the record (it sounds that way to me), but either way 
it's the same chords.

"This Means War"
by Shovels and Rope
O' Be Joyful

capo on the 4th (chords in relation to the capo)

G B7 Em C G D G
G B7 Em C G D G

G
              B7    Em   
Well I had an awful dream
  C         G          D       G
I laid your bones by a shallow stream
                        B7     Em
I carved your name in a willow tree
    C        G       D       G
And beat the ground

G B7 Em C G D G

G
                    B7    Em
The water clear and sun a’bright
  C        G     D        G
I left the tears alone to dry
                 B7        Em
I raised my arms up to the sky
C     G               D     G
And I challenged God

G B7 Em C G D G
G B7 Em C G D G

G
                      B7     Em
You had no prose, you had no right
   C       G        D      G
To take my dove, my little light
                 B7      Em
Half of my soul, half of my sight
C  G              D           G
My beating heart, my precious wife

Em          C       G             B7
Have you no answer, follow you no more
Em        C    D             G
I'm on my own,    this means war

G B7 Em C G D G
G B7 Em C G D G

G
                   B7     Em
When I awoke, when I came to
   C         G           D     G
My whole perspective was brand new
                   B7      Em
I made a vow and I keep it true
C         G            D        G   
Hold very close what's given to you
B7        Em           C        G      D     G
Keep very close what's given to you