At the time, because of the threat of foreign claim of the liberated lands, detachments of Serbian army (with many volunteers from other nations of future Yugoslavia who helped liberate territories under Austria-Hungary, Italy and Nicholas I) were dispatched throughout the newly liberated territory (which was unrecognised as part of any state until Treaty of Versailles 1920. Because this territory did not belong to any recognised state, the threat of entry of foreign forces was annihilated until the unification was complete by the presence of the only recognised, organised army among South Slavs of Yugoslavia, Serbian army (with many Montenegrin Serb, Croat and Slovene volunteers).