Larry Jaques fired this volley in
:

Does every new soldier know all of that?

By the time they've handled any, yep... every man above them who's ever
done will (faithfully) pass it on.

OK, but I'll bet you either researched it prior to burning it, or took
someone else's demonstration of burning it before you lit your own C4,

Nope... took it on faith. One thing a well-indoctrinated soldier does is
believe what he's told by anyone with one more stripe than his. He
believes, because that's part of his job description.

Lloyd