1 Comments Posted by Leroy (the Netherlands)

Googled "S9JNA" for fun, and got this: http://redbook.gao.gov/7/fl0031860.php

Still don't know what it stands for, but the rocket ammunition was M28A2 HEAT, which, according to the infallible Wikipedia, was used by the M20 "Super Bazooka," which entered production just before the start of the Korean war.

I suppose it was given or sold to France in case of a Soviet tank invasion.