This Is the Army, Mr. Jones  
Irving Berlin

A bunch of frightened rookies were listening filled with awe.
They listened while a sergeant was laying down the law.
They stood there at attention, their faces turning red.
The sergeant looked them over and this is what he said,

This is the army, Mr. Jones,
No private rooms or telephones.
You had your breakfast in bed before,
But you won't have it there anymore.

This is the army, Mr. Green
We like the barracks nice and clean.
You had a housemaid to clean your floor,
But she won't help you out anymore.

    Do what the buglers command,
    They're in the army and not in a band.

This is the army, Mr. Brown
You and your baby went to town.
She had you worried, but this is war
And she won't worry you anymore.