Passage: On 5 September 1977, an RAF 'commando unit' attacked the chauffeured car carrying Hanns Martin Schleyer, then president of the German employers' association, in Cologne. His driver, Heinz Marcisz, 41, was forced to brake when a baby carriage suddenly appeared in the street in front of them. The police escort vehicle behind them was unable to stop in time, and crashed into Schleyer's car. Four (or possibly five) masked RAF members sprayed machine gun and machine pistol bullets into the two vehicles, killing Marcisz and a police officer, Roland Pieler, 20, who was seated in the backseat of Marcisz's car. The driver of the police escort vehicle, Reinhold Brändle, 41 and a third police officer, Helmut Ulmer, 24, who was in the second vehicle were also killed. The hail of bullets riddled over twenty bullet wounds into the bodies of Brändle and Pieler. Schleyer was abducted and held prisoner in a rented apartment in an anonymous residential neighborhood near Cologne. He was forced to appeal to the center-left West German government under Helmut Schmidt for the 'first generation' of RAF members (then imprisoned) to be exchanged for him. Police investigations to locate Schleyer proved unsuccessful.

Question: On what date did RAF attack the car?
5 September 1977