My uncle became a high ranking sergeant in the National Guard before it was turned into the regular Army. He was part of a Slavonian detachment. I remember him telling me about HOS paramilitaries. His unit was ordered to immediately disarm and arrest “crni” ( it was what they called Hosovci because of their black uniforms) if they ever encountered them. HOS fighters were ordered to disarm and surrender to the National Guard, strip their HOS patches, and submit to the command of the National Guard or face arrest while HOS unit leaders were immediately arrested and sent to Zagreb.