In November 1919, Maister's forces joined the Kingdom of Serbs, Croats and Slovenes Army's offensive in Carinthia. Maister joined them later and took part of the capture of Klagenfurt. After the Carinthian Plebiscite, in which majority of the local Slovenian population decided to remain part of Austria, Maister withdrew to private life. He spent most of his later life in an estate near Planina in Inner Carniola.