Croatian National Resistance

The Croatian National Resistance (Croatian: Hrvatski narodni otpor, HNO; Spanish: Resistencia Nacional Croata), also referred to as Otpor, was an Ustaša organization founded in 1955 in Spain. The HNO ran an armed organisation, Drina, which continued to be active well into the 1970s.

Source: Wikipedia — Croatian National Resistance (CC BY-SA 4.0)