Interesting facts about the Serbian army!
Aside from nurses and some non-combat positions, the Serbian military was always all-male. However, women are known to have disguised themselves as men to fight in the Balkan Wars and WWI, and by WWII partisan units allowed female soldiers to serve in combat and as medical. Though then ditched, this allowance has recently become practice again for Serbia with the professionalization of the army. Sunglasses included if you sign up.