The Royal Yugoslav Air Force (Vazduhoplovstvo Vojske Kraljevine Jugoslavije, VVKJ), was formed in 1918 in the Kingdom of Serbs, Croats and Slovenes (renamed to Kingdom of Yugoslavia in 1929) and existed until Yugoslavia's surrender to the Axis powers in 1941 following the Invasion of Yugoslavia during World War II. Germany distributed captured Royal Yugoslav Air Force aircraft and spare-parts to Romania, Bulgaria, Finland and the newly created Independent State of Croatia.