Turkmenistan vs. Kazakhstan


Military branches
Armed Forces of Turkmenistan: National Army, Navy, Air and Air Defense Forces; Federal Border Guard Service (2019)
Armed Forces of the Republic of Kazakhstan: Land Forces, Navy, Air and Air Defense Force; Ministry of Internal Affairs: National Guard, Border Service (includes Coast Guard), State Security Service (2019)
Military service age and obligation
18-27 years of age for compulsory male military service; 2-year conscript service obligation; 20 years of age for voluntary service; males may enroll in military schools from age 15 (2013)
All men 18-27 are required to serve in the military for at least one year. (2019)

Source: CIA Factbook