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:
Flag of the International Brigades.svg Inkscape Bandera d'as Brigadas Internacionals Bandera de les Brigaes internacionales Bandera de les Brigades Internacionals Flagge der Internationalen Brigaden aus dem Spanischen Brgerkrieg Gezeichnet von mir Ratatosk basierend auf Image Flag of the Second Spanish Republic svg von Valadrem