Another use for chants of this type is in the military version of Hank Snow's song, Movin' On, which first got adapted during the Korean war with various references to events of the day.

Verses like,

The old tom cat was feelin'mean
When he caught his tail in a sewing machine.

He's movin's on
He'll soon be gone

mutated to . .

Charley chink Commin' through the pass,
Playin' burp-gun boogie on I Corp's ass,

They're movin's on
They'll soon be gone

This referred to I Corps disasterous retreat back down the Korea penninsula after the entry of the Red Chinese Army into the war, ca 1950-51.

Other similar versions had . .

Mama San comin' down the track
Tits hangin's out and kid on her back

Or . .

The pitter patter of little feet
The First Cav's in full retreat

Later on we had verses like,

C-130 runnin' on the strip
Airborne goin' on a one-way trip

   which referred to the fact that many Airborne Infantry personnel jumps were made from C-130's, while the larger aircraft dropped the tanks and and heavy equipment they would need on the ground. Songs of the Viet Nam War, by Les Cleveland has other verses and songs that were current back then.

Dave