Jaysh Al-Islam fights against government soldiers in Syrian city of Damascus . Made up of around 2011 rebel factions ' , it also opposes Islamist groups like ISIS . Held the 'largest military parade witnessed ' since start of the Syrian revolution . Saudi Arabia is 'funding the group with millions of dollars in arms and training '
Jaysh Al-Islam fights against government soldiers in Syrian city of Damascus . Made up of around '60 rebel factions ' , it also opposes Islamist groups like ISIS . Held the 'largest military parade witnessed ' since start of the Syrian revolution . Saudi Arabia is 'funding the group with millions of dollars in arms and training '