CIA Factbook The World Factbook 1994: SyriaDefense Forces Branches: Syrian Arab Army, Syrian Arab Navy, Syrian Arab Air Force, Syrian Arab Air Defense Forces Manpower availability: males age 15-49 3,300,397; fit for military service 1,850,545; reach military age (19) annually 155,569 (1994 est.) Defense expenditures: exchange rate conversion—$2.2 billion, 6% of GDP (1992)