In November 2014, the University of Crete awarded Richter with an honoris Ph.D. for his historical work. The award provoked protests by some Greek historians and other academics who claimed that Richter, in his work, has "smeared" the reputation of Cretan resistance and assigned "noble incentives" to the Nazi invaders. Additionally, in an interview Richter gave to the Greek newspaper Kathimerini, he spoke of the destruction brought upon Greek islands and villages by "the Germans, the Italians, the communists and the nationalists", which some Greek commentators viewed as "moral relativism," assigning equal weight to the actions of the occupation forces and the local Greek guerrillas. Richter rejected all the accusations against his work, stating that his duty as a historian is to relate what he "believe to be the historical truth," and defending the point he made that "until Operation Mercury, World War Two had been a relatively 'clean' war, with both sides respecting the laws of war." The university's authorities initially declined the appeals made by Greek politicians and academics and rejected the claims of bias. Εventually, and after a formal, intra-university appeal, the university decided to remove his title in 2016. Richter stated that he feels "honored" to be only the second German academic to ever have his academic title removed, the first being, as he claimed, Thomas Mann by the Nazis.
Τrial
In November 2015, Athens' public prosecutor indicted Richter under Art. 2 of "anti-racist" and "hate speech" law 4285/2014, for "denying Nazi crimes against the people of Crete." On 10 February 2016, Richter, after being tried in absentia, was found innocent of all charges.
Griechenland: zwischen Revolution und Konterrevolution 1936–1946, Europäische Verlagsanstalt, Frankfurt, 1973; Δύo επαvαστάσεις και αvτεπαvαστάσεις στηv Eλλάδα 1936–1946, Exantas, Athens, 1977
British Intervention in Greece: From Varkiza to Civil War, February 1945 – August 1946, Merlin Press, London, 1986; Η επέμβαση τωv Άγγλωv στηv Ελλάδα: Από τη Βάρκιζα στov Eμφύλιo Πόλεμo, Hestia, Athens, 1997
Griechenland im Zweiten Weltkrieg, August 1939 – Juni 1941 Syndikat, Bodenheim, 1997; Η Ιταλο–γερμανική επίθεση εναντίον της Ελλάδος, Govostis, Athens, 1998–1999
Operation Merkur: Die Eroberung der Insel Kreta im Mai 1941, Rutzen, Ruhpolding, 2011; Η μάχη της Κρήτης, Govostis, Athens, 2011