Serbian Football League (1940–1944)
Serbian League (Serbian: Српска лига / Srpska liga) was a football league championship played between the late 1930s until 1944 in Yugoslavia. With the creation in April 1941 of the Serbian military administration, which was a quisling civil government set up by German authorities, the league became the highest level domestic football competition within the territory.
Source: Wikipedia — Serbian Football League (1940–1944) (CC BY-SA 4.0)