Draft evader: a draft evader is a Syrian male, above the age of 18, who has avoided being drafted into the Syrian Armed Forces either by hiding from the Syrian authorities or by fleeing Syria.

Deserter: a deserter is a former member of the Syrian Armed Forces (e.g. a conscript, a non-commissioned officer (corporal or sergeant) or an officer) who has left his post or unit in the Syrian Armed Forces without permission. See also 4.2.3. Military deserters and defectors for the legal definition of military desertion according to Syrian law. 

Defector: a defector is a former member of the Syrian Armed Forces who has left the Syrian Armed Forces and joined an armed opposition group in Syria.

Reservist: a reservist is a Syrian male who has previously completed his mandatory military service in Syria and can still be called up for reserve service in the Syrian  Armed Forces.

Military service: the term is used broadly to cover both military service and reserve service in the Syrian Armed Forces.