Jaysh al - militia fights against government soldiers in Syrian areas of Damascus . made up of around ' dozen rebel factions ' , it also opposes Islamist groups like ISIS . Held the ' largest military parade witnessed ' since start of the Syrian revolution . Saudi government is ' supplying the group with millions of dollars in equipment 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 '