From the class meeting in Bruck in 1578 to Berlin Congress in 1878, i. e. from the very beginning till the end of its fundamental function, Military Border goes through various and very complex processes. Its problems in the 1850-ies are the topic of this paper. In spite of clear demands of political circles in Zagreb concerning the Military Border, the Monarchy in Vienna tries to protect it as a distinctly military institution that will not act against Hungary only but against national integration on the Balkan and Apenine Peninsula too. After the revolution in 1848/49 military and court circles in the Austrian monarchy invest special labours to turn the Military Border into a corpus separatum where military tradition will be further cheri...