Here, they worked to fulfill specific tasks set out to them by the Germans, were not permitted to wear German uniforms, and were ordered to undermine the actions of the Partisans rather than Nedić's administration. Headquartered in his Berlin apartment, Janjić had his men infiltrate the ranks of the Yugoslav forced labourers there, using methods such as blackmail, robbery, and entrapment to expose Partisan sympathizers. Despite these efforts, Janjić's actions were seen as being "[harmful] to German interests," and in May 1944 he was replaced by two other members of his detachment.[9]