One of the most important events related to August 15 is the anniversary of the Battle of Warsaw in 1920. It is celebrated as the Polish Army Day in remembrance of one of the most important victories of the Polish army. It was an extremely important battle for all of Europe, because it stopped the Soviet invasion to the west. If the Polish Army with the help of our brother Hungarians, who helped us deliver weapons and ammunition did not stop the Soviet hordes, the most bloody totalitarian regime that was Soviet communism could already in 1920 control Europe. What would the effects be experienced by the inhabitants of Central and Eastern Europe after the Second World War. In 1851, the British historian Edward Shepard Creasy wrote a book entitled "Fifteen Decisive Battles of the World", while Edgar Vincent D'Abernon, diplomat and writer, added another three to this title list, and thus defeating the Bolsheviks near Warsaw gained the name of the 18th decisive battle in the history of the world. Thanks to this victory, the most hated symbol of totalitarianism, next to the sickle and hammer, the red star is used only in one strange state.