Try:
If you want to see the (a) I know where he is, I know where he is, I know where he is If you want to see the (a) I know where he is, he's (b) I saw him, I saw him (b), I saw him (b)
(a) General (b) Sitting in the Follies Bergere
(a) Colonel (b) Pinning another medal on his chest
(a) Captain (b) Home again on seven days' leave
(a) Quartermaster (b) Pinching all the company's rum
(a) Sergeant (b) Drunk upon the dugout floor
(a) Private (b) Hangin' on the old barbed wire ^^