 However, Hitler refused to officially annex South Tyrol in spite of urging by local German officials and instead supported having the RSI hold official sovereignty over these territories and forbade all measures that would give the impression of official annexation of South Tyrol.However, in practice the territory of South Tyrol within the boundaries defined by Germany as "Operationszone Alpenvorland" that included Trento, Bolzano and Belluno were "de facto" incorporated into Germany's "Reichsgau Tirol-Vorarlberg" and administered by its "Gauleiter" Franz Hofer.The region identified by Germany as "Operationszone Adriatisches Küstenland" that included Udine, Gorizia, Trieste, Pola and Fiume were "de facto" incorporated into "Reichsgau Kärnten" and administered by its "Gauleiter" Friedrich Rainer.