Czechoslovakia celebrates Fifteenth Anniversary of her foundation with display of Military Strength : Armoured cars through Prague -- The Armoured cars passing through a Prague street.The celebrations making the Fifteenth anniversary of the founding of Czechoslovakia as an independent State, in which President Masaryk took part, included a big display of military strength in Prague. During the display a procession of the latest type armoured cars passed through the streets. November 1, 1933.