Since 1754 the Predil Pass marked the border between the Duchy of Carinthia with the lands of the Princely County of Gorizia and Gradisca (part of the Austrian Littoral from 1849) in the southeast, both part of the Habsburg Monarchy. During the War of the Fifth Coalition, an Austrian contingent under Captain Johann Hermann von Hermannsdorf on 18 May 1809 fought against the French forces moving from the Kingdom of Italy upon the Battle of Tarvis. Hermannsdorf was killed in battle, in 1851 a memorial was erected in his honour.