the Red Army, and the German soldiers fighting to protect them. Hillgruber went on to write that Habermas was seeking to censor him by criticizing him for taking the German side when discussing the last days of the Eastern Front. Replying to Habermas's charge that he was a "neo-conservative", Hillgruber wrote:How does he come to come categorize my work as having so-called neoconservative tendencies? For decades I have never made any bones about my basic conservative position. Deeply suspicious as I am of all "leftist" and other world-improving utopias, I will gladly let the label "conservative" apply to me, meant through it is as a defamation. But what is the meaning of the prefix "neo"? No one "challenges" this new "battle" label, so often seen these days, in order to turn this APO jargon against the inventor of the label. Hillgruber argued that there was a contradiction in Habermas's claim that he was seeking to revive the original concept of the Sonderweg, that is, the ideology of Germany as a great Central European power that was neither of the West or the East which would mean closing Germany off to the culture of the West while at the same time accusing him of trying to create a "NATO philosophy". Hillgruber took the opportunity to once more restate his belief that there was no moral difference between the actions of the German Nazis and the Soviet Communists, and questioned whether the Holocaust was a "singular" event. Finally, Hillgruber accused Habermas of being behind the "agitation and psychic terror" suffered by non-Marxist professors in the late 1960s, and warned him that if he was trying to bring back "...that unbearable atmosphere that ruled in those years at West German universities, then he is deluding himself". The left-wing German historian Imanuel Geiss wrote in an essay first published in the Evangelische Kommentare magazine in February 1987 that both the essays in Zweierlei Untergang were "respectable", but that it was "irritating" and ill-advised on the part of Hillgruber to publish them together, with the implied moral equivalence between the expulsion of the Germans from Eastern Europe, and the genocide of the Jews. Geiss accused Habermas of engaging in a "malicious insinuation" in his attacks on Hillgruber. Geiss wrote that Hillgruber's demand that historians had to side with German troops fighting on the Eastern Front was problematic, but it did "...not justify the merciless severity,