I think it's just barre chords or power chords and the G chord during the verse 
has some open E notes on the low E string like  0 3 0 3 0    

F            Bb     G x4

F                Bb   G
Walker sees the mist rise
F      Bb   G
Over no man's land
F            Bb   G
He sees in front of him
F               Bb   G
A smashed up waste ground

C              Bb
There are no fields or trees
Bb             F           
No blades of grass
F                 Bb      G
Just unhurried ghosts are there
F               Bb   G
Hanging in the wire

F                  Bb    G   x2

F                Bb   G
Walker's in the wire
F             Bb   G
Limbs point upwards
F                 Bb   G
There are no birds singing
F                    Bb   G
The white cliffs of Dover

C                     Bb
There are no trees to sing from
Bb                       F
Walker cannot hear the wind
F             Bb   G
Far off symphony
F                 Bb   G
To hear the guns beginning

C      Bb               F

F                Bb     G   x4

Dm       F
Walker's in the mist
Bb     F
Rising 
Dm   F       Bb    Dm
over no man's land
Dm      F       Bb      F
In the battered waste ground
Dm       F     Bb   F
Hear the guns firing

Bb    F    x4