Not entirely sure the intro is totally correct. but here's how I heart it! 
Intro Tab: 
e-10h 12h 14--14h 14p 12-10h 12-----------------e 
b-----------------------------------------------b 
g-----------------------------------------------g 
d-----------------------------------------------d 
a-----------------------------------------------a 
E | -----------------------------------------------E 
 
e-10h 12 10h 12---10---------------------------e 
b----------------------10h 12-------------------b 
g-----------------------------------------------g 
d-----------------------------------------------d 
a-----------------------------------------------a 
E | -----------------------------------------------E 
                   D (barre) 
e | ------------------10---------------------------e 
b-----12-10----10--10---------------------------b 
g--12-------12-----11---------------------------g 
d------------------12---------------------------d 
a------------------12---------------------------a 
E | ------------------10---------------------------E 
 
 
Intro: D 
 
             D                               A 
I am a soldier, trained and conditioned 
                 G                                          D 
Served my time, but I didn't choose this mission 
                A                          G 
Fighting a war, I think I'm the only 
                      D 
Solider for the lonely 
 

                   D                      A 
I have been wounded, under fire 
                    G                                   D 
But it's not deterred, or weakened my desire 
          A                                  G 
To defend them. 'cause I'm the only 
                      D 
Solider for the lonely 
 
Chorus: 
                G                       A 
For every heart that's been broken 
                G                     A 
For every kind word left unspoken 
         G                      A 
Every promise not remembered 
           G                       D 
I'll not forget, I'll not surrender 
                      A                   
'Cause I'm the only 
G                    D 
Soldier for the lonely 
 
 
                  D                          A 
Here in the trenches, no sanctuary 
                G                 D 
Nights are long, and solitary 
             A                                  G 
Nobody holds me, 'cause I'm the only 
                      D 
Soldier for the lonely 
 
Chorus 
 

                  D                          A 
I'll plant a rose, I'll shed a tear 
                G                 D 
I'll die alone, no one to hear 
             A                                  G 
My battle cry,'cause I'm the only 
                      D        A 
Soldier for the lonely 
            G 
I'm the only 
                      D          A   D   A  D 
Soldier for the lonely