Warning - Extreme thread drift - Pull up, Pull up.
Seeing Tigs get called a less than charitable term for his observation above almost encapsulates the metaphorical nature of this whole thread. To assume that the enemy are illiterate goat shaggers is to make a critical error. To assume they are not capable of complex thought processes is a deadly mistake. The IRA spent 30 years teaching us a thing or two about Internal Security Ops and for Slab to have orchestrated all he did and not get caught for it was not down to just good luck.
If you get all girly over giving credit to the bad guys for their innate intelligence and cunning skills at wreaking death and destruction you are destined to make the same mistakes all over again. If you could for one moment imagine AQ to be young, vibrant, intellectual middle class extremists carefully compiling intelligence and probing our security weaknesses (while not shagging goats), you might then be able to see where lapses in personal and collective security could be exploited by these evil geniuses. You might then see that any internet references to your ID, Military role, location and activities need to be carefully controlled.
As for service humour, no-one is laughing at the victims of terrorism, we are laughing the way people do before doing a bungee jump or free-fall parachuting. It's a relief valve that keeps us sane. It's probably insensitive, thoughtless and cruel to all those people who aren't getting on the plane to be shot at by the bad guys.