Inevitable really...
1) CGS thinks 'Harumph. Not happening with any of my lot, whatever main building thinks.' Issues succinct order to this effect.
2) CGS's order passed round army
3) News of CGS's order reaches media
4) News of CGS's order reaching media reaches Swiss Des
5) Swiss Des remembers CGS is Man With Whom One Does Not Trifle (see Daily Mail interview).
6) Swiss Des panics and thinks of what may happen if CGS is said by media (who seem to like CGS) to be telling colleagues that Tony, Gordon and Des are bunch of blundering incompetents.
7) Swiss Des issues instructions that his last lot of instructions are now to be ignored and that anyone ignoring instruction to ignore instructions to ignore long-standing instructions that one does not talk to press will be in trouble.At least until he issues another set of instructions that make him look even more of a spineless, weak-willed Sec of State emerge.
Or something like that...