Abu al-Fadhal al-Abbas Brigade

"Liwa Abu al-Fadl al-Abbas meaning Brigade of Abu al-Fadl al-Abbas, also known as the al-Abbas brigade is a mainly Shia Syrian militant group which operates throughout Syria...The group rose in prominence in reaction to the desecration of various shrines, heritage sites and place of worship by rebels during the Syrian civil war and subsequently collaborated with the Syrian Army. Its role is largely defensive rather than offensive, largely in places of interest in Syria...In May and June 2013...a split had developed between al-Abbas brigade forces over finances and leadership which erupted into a gunbattle. Many non-Syrian members subsequently formed a different brigade. As of 2014, not much is known about their activity. On May 19, 2014, fighters from the Nour al-Din al-Zanki Brigade claimed to have took over the al-Abbas Brigade's regional headquarters in Aleppo."

[link to en.wikipedia.org]