Prove you are a homosexual.
From here:
Gay men in Turkey seeking exemption from the country’s mandatory military service must prove their homosexuality, the BBC reports, even though many army physicians realize it’s medically impossible to determine sexual orientation.
[….]
Lacking any valid “diagnostic tools,” a physician told the BBC World Service, potential gay draftees must prepare whatever evidence they can to convince a military health panel of their homosexuality, sometimes deemed as a “psychosexual disorder.”
“They asked me if I liked football, whether I wore women’s clothes or used women’s perfume,” said one gay conscript in his 20s.
Here are a group of conscripts trying to get out of military service: