This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Roundel of the Royal Yugoslav Air Force .svg Roundel of the Royal Yugoslav Air Force svg Roundel of the Royal Yugoslav Air Force as introduced used until selfmade based on nonvectorized Image Roundel of the Royal Yugoslav Air Force svg Hierakares Insignia Hierakares Roundels of Yugoslavia Black blue red white roundels