Flag of <i>Eusko Abertzale Ekintza</i>, the Basque nationalist and socialist party, featuring the <i>lauburu</i> and colors of the <i>Ikurrina</i>; used during the Spanish Civil War. Image is based on <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180302220138/https://www.combatientes.es/banderas.htm">Combatientes.es gallery</a>; for details on its history and use, see <a rel="nofollow" class="external text" href="https://gaizkafernandez.com/2013/08/13/precedentes-lejanos-de-ee-el-nacionalismo-vasco-heterodoxo-hasta-la-guerra-civil/">Gaizkafernandez.com</a>.
<a href="//commons.wikimedia.org/wiki/User:Dahn" title="User:Dahn">Dahn</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span>