The British military is famous for absorbing and accommodating into its ranks soldiers from many of its former colonies. Particularly noteworthy among these groups are the Ghurkas, a fierce fighting tribe from Nepal.
Unsurprisingly, things occasionally get lost in the translation between British Army requirements, and Gurkha culture. I guess that explains how this particular individual came up on a court-martial charge for zealously collecting a DNA sample from a Taliban fighter that he engaged.
Quite reasonably, it seems that the charges have been dismissed on the soldier returned to his unit. I hope they were careful to inspect his carry-on bag before he got on the airplane home, however.