Original sentence: A theory accepted officially was that the Turkish Armed Forces had been founded in 1363, when the Pençik corps (the predecessor of the Janissary corps) had been formed and, in this context, on 28 June 1963, it celebrated the 600th anniversary of its foundation.The Turkish Army traces its origin to the Ottoman Army.The army was formed on November 8, 1920, after the collapse of the Ottoman Empire
Edited sentence: Back then, the accepted theory was that the Turkish Armed Forces had been founded in 1363, when the Pençik corps (the predecessor of the Janissary corps) had been formed.Official sources trace the army's foundation to Modu Chanyu of the Xiongnu Empire in 209 BC, but the modern history of the army began with its formation after the collapse of the Ottoman Empire.On 28 June 1963, the Turkish Army celebrated the 600th anniversary of its foundation