I don't think it's any secret here; there's MINDEF-sanctioned
articles/books, both printed & online, publicly hinting at what
24SA do. Just don't reveal the actual equipment or SOP's, that's
all.
To the o/p: Artillery is probably the most technical-skilled of all
the combat formations; you just don't fire a 155mm round over 20
clicks & expect it to hit the target dead-on. There's a fair
amount of mathematical & metrological data required for
calculation, & 24SA helps provide that. It's not a "sexy" job,
but I've seen them "take-action" & they kena takan like the
rest of us gunners ...