Spanish Republican Armed Forces
The Spanish Republican Armed Forces (Spanish: Fuerzas Armadas de la República Española) were initially formed by the following two branches of the military of the Second Spanish Republic: Spanish Republican Army (Ejército de la República Española (1931–1936) and Ejército Popular de la República Española (1936–1939)). It included the Aeronáutica Militar air arm.
Source: Wikipedia — Spanish Republican Armed Forces (CC BY-SA 4.0)