This research deals with anti-war thinking and the pacifist movement that has been brewing since the end of the 19th century, in the heat of the pre-war imperialist climate in Europe during the prolegomena of the Great War. And in the broad context of world conflagration (1914-45), about how Spanish women think war, live and act. These pages reflect the ideas and considerations of some of those women who reflected on the war and also the national and international organized activism of those who fought for peace, with a strategy that combined feminism, pacifism and antifascism. Some of these voices protagonistas are Concepción Arenal, Carmen de Burgos, María Lejárraga, Isabel Oyarzábal, Veneranda García Manzano, Carmen Dorronsoro, Federica ...