An attempt at verifying the theses of Viktor Suvorov, a former GRU spy who later became a writer, which maintain that the state responsible for starting World War II, whose first victim was Poland, is, first and foremost, the USSR and not only Hitler and Nazi Germany. A journey back to the events of 22 September 1939, when the tank troops of the Wermacht and the Red Army were matching together on a parade in Brest and the commanders of both armies were standing next to each other on the honorary tribune.