sentences:  Einsatzgruppe C and the Order Police, assisted by Ukrainian militia, carried out the killings, while the German 6th Army helped round up and transport the victims to be shot.The Germans continued to use the ravine for mass killings throughout the war; the total killed there could be as high as 100,000.Historians agree that there was a "gradual radicalization" between the spring and autumn of 1941 of what Longerich calls Germany's "Judenpolitik", but they disagree about whether a decision—"Führerentscheidung" (Führer's decision)—to murder the European Jews was made at this point.