Yemen War 2015 - Heavy Fighting Erupts Between Houthi Rebels And Saudi Arabian Army On The Saudi Arabian Border. Footage surfaced showing Houthi rebels battling the Saudi Arabian Army on the Saudi border. The video shows several artillery attacks on a Saudi military position and heavy firefights in the area can be heard. Clashes occured in the Jizan Region. The fighting was started by Houthi fighters as a response to Saudi Arabian involvement into the Yemeni Civil War.