Have I got the right tune? If it was in C, it would go:

low-G | C G C E G G G, | F G-F E D E F-E D low-G
  | C G C E G G G, | F G-F E D E F-E D low-G | C ...

(Where a hyphen indicates semi-quavers, comma=either a crotchet rest or "make this one a minim", and all other notes are quavers. )


There's a tune I learned in the school payground:
lG | C, lG C, lG | C lG C E G,
D | F, D F, D | F D B D lG,
lG | C, lG C, lG | C lG C E G,
E | F F-F E D, E E-E D C | D D-D C B C,

And the words I learned to go with it were:

A sol-, A sol-, A soldier I would be,
Two pis-, two pis-, two pistols on my knee,
For cu-, for cu-, for curiosity,
To fight for the old count-, fight for the old count-,
fight for the old country!

(It's all in the pronunciation. =:o} )