According to Western intelligence agencies, even though the top brass is still loyal to President Bashar Assad, lower-level officers are deserting in large numbers, and in some cases, whole units have deserted en masse. [...]And maybe some of the top brass are leaving also. According to Arutz7:
A Syrian opposition group reported on Wednesday that a senior officer in the Syrian army has defected.
The group claimed that the officer is General Mustafa al-Sheikh, commander of the Syrian army’s chemical warfare unit. It was also reported that he fled to Turkey.