Complex sentence: Both of them 2 most wanted terrorists protected by the Bangsamoro Islamic Freedom Fighters (BIFF) a muslim insurgent group which pledged allegiance to ISIS in 2014.the commandos were retreating from the assault on their targets when they came under fire from members of the BIFF.
Split into simpler sentences: Both of them 2 most wanted terrorists protected by the Bangsamoro Islamic Freedom Fighters (BIFF) a muslim insurgent group which pledged allegiance to ISIS in 2014. The commandos were retreating from the assault on their targets when they came under fire from members of the BIFF.