The Battle of Posada was fought between Basarab I of Wallachia and Charles I of Hungary.
Dezső sacrifices himself protecting Charles Robert, by József Molnár, oil on canvas in 1855
The army of Charles Robert Anjou ambushed by Basarab's army at Posada from Vienna Illuminated Chronicle (1370/1373). The Vlach (Romanian) warriors rolled down rocks over the cliff edges in a place where the Hungarian mounted knights could neither escape from them nor climb the heights to dislodge the Vlach warriors.
The Battle of Posada as depicted in the Viennese Illuminated Chronicle
Battle of Posada as depicted in Johannes de Thurocz's Chronica Hungarorum (1488)
Basarab I, also known as Basarab the Founder, was a voivode and later the first independent ruler of Wallachia who lived in the first half of the 14th century. Many details of his life are uncertain. Although his name is of Turkic origin, 14th-century sources unanimously state that he was a Vlach (Romanian). According to two popular theories, Basarab either came into power between 1304 and 1324 by dethroning or peacefully succeeding the legendary founder of Wallachia, Radu Negru, or in 1310 by succeeding his father, Thocomerius.
Basarab I (fresco in Argeș)
The battle of Posada (Viennese copy of Hungarian Illuminated Chronicle)
King Charles I fleeing from the Battle of Posada
Princely Church of Saint Nicholas in Curtea de Argeș