 Complete the following phrase:  In October 2014, three fighters were captured by the rebel Islamic Front. Their fates are unknown. On 7 May 2015, Iran commemorated 49 fighters of the group who were killed. According to Spiegel Online, 700 members of the group are believed to have been killed in combat around Daraa and Aleppo as of June 2015. The Washington Institute estimated at least 255 casualties between January 19, 2012 and March 8, 2016. In March 2016, they fought in the 