OK, getting close here.

“Derb—The names chosen for operations generally incorporate the nicknames of the units involved. 3rd Brigade Combat Team, 2nd Infantry Division (the ‘Arrowhead Brigade’) is the lead element in Arrowhead Ripper. Follow-on operations in Diyala will likely be called something like Arrowhead Hammer or Arrowhead Strike, etc.”

Similar advice from other military & ex-military folk. So far no clear explanation of “Ripper,” though. Anything to do with… No, couldn’t be, couldn’t possibly be.