Simplify the following text for a Grade 8 native English-speaking person.
Original: Founded by former minister of defense Vidkun Quisling and a group of supporters such as Johan Bernhard Hjort - who was to lead the party 's paramilitary wing ( the Hird ) for a short time before leaving the party in 1937 after internal conflict .
Simplified: The party was founded by Vidkun Quisling and a group of sympathisers . The party 's paramilitary wing was called Hirden ( the Hird ) .