Invasion of Yugoslavia
The Society of Saint Sava or Saint Sava Society () was a Serbian non-governmental association with the aim of maintaining and protecting the Serb people in the Ottoman Empire, in Old Serbia and Macedonia, and in Austro-Hungarian Bosnia and Herzegovina, founded in 1886 in Belgrade, the capital of the Kingdom of Serbia. It was active, with a brief pause during the First World War, until the Invasion of Yugoslavia (1941).