Thai men over 21 must serve in the army.
Those who volunteer serve six months, but others choose the annual lottery, which goes on for 10 days in recruitment centres around Thailand, reported Reuters.
But what happens when transgenders and Buddhist monks turn up at the enlistment centres?
They still have to undergo the requisite measurements and interviews with officials before they could be considered for exemption.
Only those not considered physically capable of service, the mentally ill and those who have significantly altered their physical appearance, such as transgenders, are exempt, according to Reuters.