In 1941 the Italian Army invaded Slovenia, annexing it to the Kingdom of Italy. The reasons of the attack concern both domestic and external affairs, including those affairs were officially presented by fascist propaganda as justification for the invasion, as well as the necessary creation of a “buffer zone” between Italy and Germany – an ally that revealed itself to be an uncertain friend. In order to chronicle a complete portrayal of the situation, it is also necessary to discuss the complex relationships in that region, and the impact of both resistance and collaboration in the theatre of war. This topic has to be examined with a critical eye and by a comparison of historiographies in order to understand all the differences of identity (e.g. political and cultural), the ideologies, and the ethnic differences in the borderland between these nation