In 1941, during World War II, Fascist Italy occupied the city, and on 3 May 1941 made ''Lubiana'' the capital of Italy's Province of Ljubljana with the former Yugoslav general Leon Rupnik as mayor. After the Italian capitulation, Nazi Germany with SS-general Erwin Rösener and Friedrich Rainer took control in 1943, but formally the city remained the capital of an Italian province until 9 May 1945. In Ljubljana, the occupying forces established strongholds and command centres of Quisling organisations, the Anti-Communist Volunteer Militia under Italy and the Home Guard under German occupation. Since February 1942, the city was surrounded by barbed wire, later fortified by bunkers, to prevent co-operation between the resistance movement that operated within and outside the fence. Since 1985, the commemorative trail has ringed the city where this iron fence once stood. Postwar reprisals resulted in a number of mass graves in Ljubljana.