Capo on the 2nd Fret 

  Em             G             Am         Em
“Oh Polly love, oh Polly, the rout has now begun,
    G               C     G       D             Em
And we must go a-marching to the beating of the drum.
   G                  C       G           D           Em
Go dress yourself all in your best and come along with me;
       Em              G    Em     Am       Em
I'll take you to the cruel war in High Germany.”

   Em             G             Am         Em
“Oh Willy love, oh Willy, come list what I do say,
   G          C      G        D           Em
My feet they are so tender, I cannot march away.
  G                      C      G              D    Em
And besides, my dearest Willy, I am with child by thee,
       Em             G   Em     Am       Em
Not fitted for the cruel war in High Germany.”
[ Tab from: http://www.guitaretab.com/t/traditional-irish/257970.html ]
  Em                 G          Am                      Em
“I'll buy for you a horse, my love, and on it you shall ride
  G          C      G        D                Em
And all my delight shall be a-riding by your side.
 G                      C      G             D     Em
We'll stop at every alehouse and drink when we are dry,
     Em           G           Em     Am       Em
We'll be true to one another, get married by and by.”

 Em                 G              Am                 Em
Oh, cursed be them cruel wars that ever they should rise
 G               C        G           D         Em
And out of Merry England press many a man likewise.
 G                         C       G             D     Em
They pressed my true love from me, likewise my brothers three,
    Em               G       Em     Am       Em
And sent them to the cruel wars in High Germany.

 Em                       G           Am            Em
No, my friends I do not value nor my foes I do not fear,
 G               C        G       D        Em
Now my love has left me I wander far and near.
G                       C          G       D     Em
And when my baby it is born and a-smiling on my knee
Em                    G    Em      Am   Em
I'll think on lovely Willy in High Germany.

   Em             G             Am         Em
“Oh Polly love, oh Polly, the rout has now begun,
    G               C     G       D             Em
And we must go a-marching to the beating of the drum.
   G                  C       G           D           Em
Go dress yourself all in your best and come along with me;
       Em              G    Em     Am       Em
I'll take you to the cruel war in High Germany.”