 Guillam survives the purge of personnel loyal to Smiley, but is demoted to the head of the "Scalphunters," fieldmen used in operations that require physical action and/or violence.The position is seen as one of the least desirable in the Circus, described humorously by Smiley as "cosh and carry".One of Guillam's agents, Ricki Tarr, inadvertently learns that the failure of Operation Testify—and Smiley's subsequent termination from the Circus—was due to the presence of a mole in the highest echelons of British intelligence.