Pack drill

Posted by ESC on September 15, 1999

In Reply to: Pack drill posted by P Garrity on September 14, 1999

: Anyone know where the expression "No names no pack drill" comes from, as in, you know who said something, but you're not prepared to say who it was for fear (eg) of getting them in trouble.

Does this relate to the old "name, rank and serial number" routine followed by prisoners of war?