and location. The enlistees are then dismissed for the day until the day that they must report for basic training. After the enlisting volunteers are dismissed for the day, the lottery process begins. Each selection center has a set quota, and the number of individuals conscripted through the lottery at each selection center will be the quota subtracted by the number of volunteers. Those who choose to proceed with the lottery then undergo the same physical and mental health exams as the volunteers, with the same procedure for dismissal for those who do not pass the health exams. Each man who stays for the lottery draws a card out of an opaque box. Those who draw a black card are released from their military service requirement and are issued the letter of exemption. Those who draw a red card are required to serve starting from the induction date specified on the card. Those with higher educational qualifications can request a reduction of service obligation. In 2018, the Royal Thai Armed Forces called up more than 500,000 men for selection. The combined quota was approximately 104,000 men: 80,000 men for the Royal Thai Army, 16,000 for the Royal Thai Navy, and 8,700 for the Royal Thai Air Force. On selection day, there were 44,800 men who volunteered to serve. After accepting the volunteers and dismissing those who were deemed ineligible, there remained a quota of approximately 60,000 slots for approximately 450,000 men who entered the draft lottery, i.e., the overall probability of drawing a red card in the lottery was approximately 13 percent. In 2017, 103,097 men participated in the draft between 1–12 April. The armed forces needed only 77,000 conscripts per annum. It has not been uncommon for some selection centers to not have to conduct the balloting lottery at all, because quotas were met by the enlisting volunteers. In such instances, those who decided not to volunteer and stay for the lottery were all issued with a certificate of exemption. Length of service varies by whether a person volunteers to enlist and their educational background. Serving a shortened period of time is given to those who enlist voluntarily. Those without a high school diploma are required to serve two years regardless of whether they volunteer. High school graduates who volunteer are required to serve one year, while high school graduates who draw red cards are required to serve two