Canaris had good reason to do this because, unknown to the High Command and Hitler, he had peppered his chief operational and administrative staff with men more loyal to him than to the Nazi Government. While outwardly Canaris appeared to be the model of intelligence-gathering efficiency, evidence exists that he secretly opposed, and actively worked against the wishes of Hitler. Canaris, Oster and the Chiefs of Abwehr sections I and II were all heavily involved in what the SD later dubbed "The Black Orchestra" ("Die Schwarze Kapelle" in German), a plot to overthrow the Nazi regime from the inside.[lower-alpha 11] Canaris's operational decisions, his choice of appointments and their decisions, and – crucially for the Third Reich – the input each plotter had into Abwehr operations, were all tainted by these secret dealings.[lower-alpha 12]