 However, the mortar was vulnerable to jamming if the barrel was dirty or damaged.During the Lebanese Civil War, Syrian Army two hundred fifty-four 240 mm mortars and S-23 180 mm guns shelled East Beirut in 1989 as part of an offensive to dislodge Christian Lebanese Army faction leader General Michel Aoun, inflicting over 900 casualties.The Syrian Army employed towed M240 240 mm mortars in the Syrian Civil War starting in 2012 against the city of Homs, making it the largest mortar weapon employed in contemporary warfare.