The British had marching songs in WW I. but not like Jodys,
one I remember reading that they were particularly fond of
"Do your balls hang low,
do they dangle to and fro,
can you catch them in a mangle
do your balls hang low..."
The also liked,
"John Brown's baby has a pimple on it's bum..."
You are correct.
The military of many nations have been singing, (Hope I got that right), for thousands of years.
Would be interesting to read some of the earliest songs.
Thank you buddy.
Heh... don't let your dingle-dangle dangle in the dirt....