YouTube account shows a group of armed men communicating and coordinating movements in an urban setting amidst ongoing gunfire. In one video, a man can be seen throwing a hand grenade.Local reports said that Jaish-Al-Ummah is a newly formed group announced on September 18 as an alliance of several Damascus-based militant groups, with the joint objective of bringing down the Assad regime. Credit: YouTube/جيش الأمة (Jaish-Al-Ummah)">