dˈʊɹɹɪŋ hɪz vˈɪzɪt tə ðə pˈɛtɹəvˌæɹɐdˌɪn fˈɔːɹtɹəs ɪn mˈeɪ, wˈʌn θˈaʊzənd sˈɛvənhˈʌndɹɪd sˈɪksti ˈeɪt, ˈɛmpɚɹɚ dʒˈoʊsəf ɹˌoʊmən tˈuː əbzˈɜːvd ɐ mˈɪlətˌɛɹi ˈɛksɚsˌaɪz wɪð mˈaɪn ɪkwˈɪpmənt kˈæɹid ˈaʊt ɪn hɪz ˈɑːnɚ.
During his visit to the Petrovaradin Fortress in May, 1768, Emperor Joseph II observed a military exercise with mine equipment carried out in his honor.