Here's what I hear on the recording by Chico Marx and His Orchestra. It's just a little more than what has been posted above.

WE MUST BE VIGILANT (AMERICAN PATROL) (3:49)
(Edgar Leslie & Joe Burke, 1942; adapted from "American Patrol"; E.H. Meacham, 1891

We must be vigilant
We must be vigilant
American Patrol!
With arms for the Army
Ships for the Navy,
Let this be our goal -
We must be diligent
We must be diligent
American Patrol!
Protect our shoreline
To the door line of every native soul.

We need this solidarity,
Or else divided we will fall;
It means the popularity
Of peace and happiness for all.

Behind this cause we must keep rallying -
Let there be no dilly-dallying
Keep us free from shilly-shallying,
Hark to freedom's call.
On the land...
In the air...
On the sea...
Everywhere!
American Patrol!

from the CD Something for the Boys: The Songs Of World War II (Vintage Jazz Classics, 1992)