Does he have dog tags?

The Taliban may take pride in parading a captured British special forces dog (though not quite as lavishly as the Romans displayed the spoils of war).  Their choice of name for their POW may indicate underlying problems for the Afghan extremists.  Calling him 'Colonel' (or rather DaGarwal) has afforded the dog such a rapid promotion that the movement must be struggling to co-ordinate their attacks.  Unless, of course, the canine was a double agent all along and has come home to his 'handlers' - he is certainly being treated better than other prisoners of the Taliban with a steady diet of chickens and beef kebabs.