It's official:

“THE G.I. SONG
1st Verse:
The coffee that they give you,
They say is mighty fine,
It's good for cuts and bruises
And tastes like iodine,

2nd Verse:
The pancakes that they serve you
They say are mighty fine
One fell off the table
And killed a pal of mine.

3rd Verse:
The soup that the yserve you
They say is mighty fine
A bowl fell off the table
And scalded ninety-nine.

4th Verse:
The chicken that they give you
They say is mighty fine
One fell off the table
And started marking time.

5th Verse:
The shoes that the issue
They say are mighty fine
You ask for number seventeen
They give you number nine

6th Verse:
Your wife comes to see you
The put you on K.P.
They put you on the clipper
A Helluva place to be,

7th Verse:
The girls that they give us
They say are mighty fine
Some are over ninety
The others under nine.

CHORUS
I don't want no more of Army life
Gee Mom, I wanta go home.”
[AAFTC, Morale Singing Program, Keesler Field Song Book, July 1943]

Col. Robert E.M. Goolrick, Commanding Officer
Lt. Col. Harry G. Douglas, Dir. of Band Training
2nd. Lt. Alexander M. Sulloway, Post Morale Singing Officer
Army Air Forces Training Command

Note: See Keesler references above. Pete Seeger was probably at Keesler, AFB when Moss Hart passed through in July-August 1942. Neil Simon's turn was nearer the end of WWII, c.1945.