22nd of June. Black day of the calendar

June 22, 1941. This Sunday is forever indicated in domestic calendars with black mourning color. This is one of the worst dates in our history. This is the day of the greatest military disaster.
How could this happen? By whose fault, the Nazis managed to catch the USSR by surprise? Why was German aviation allowed on the first day of the war to shoot hundreds of our aircraft with impunity at the airfields, and the numerous divisions of the Red Army were crushed and defeated in a matter of weeks? How did it happen that the colossal military machine of the Soviet state failed at the most crucial moment? .. Detailed, by hours and minutes, the chronicle of the tragic events on June 22, 1941 and the analysis of the causes of the defeat, the memories of veterans and evidence of eyewitnesses of the tragedy - in the joint project of leading military historians