Original sentence: Although exact details the effectiveness of either remain evasive , it transpires that during the first year of this war they at least managed to damage numerous attack helicopters of the RSLF and the RSNG, and thus forced their crews to keep their distance.An armed conflict between Saudi Arabian troops and Houthi insurgents has been taking place at the Saudi–Yemeni border, in the southern regions of Asir, Jizan, and Najran, since the onset of the Saudi Arabian-led intervention in Yemen in 2015.Over the course of the conflict the Houthis have captured and/or destroyed several military bases and outposts in Saudi Arabia
Edited sentence: Although exact details the effectiveness of either remain evasive.An armed conflict between Saudi Arabian troops and Houthi insurgents has been taking place at the Saudi–Yemeni border, in the  saudi southern regions of Asir, Jizan, and Najran, and in the yemeni northern regions of Sa’dah  and hajjah since the onset of the Saudi Arabian-led intervention in Yemen in 2015.Over the course of the conflict the Houthis have claimed to captured or destroyed several military bases and outposts in Saudi Arabia but this has denied by Arab-led coalition