The Republic of Korea Army (ROKA; Korean: 대한민국 육군; Hanja: 大韓民國陸軍; RR: Daehanminguk Yukgun), also known as the ROK Army or South Korean Army, is the army of South Korea, responsible for ground-based warfare. It is the largest of the military branches of the Republic of Korea Armed Forces with 365,000 members as of 2022[update]. This size is maintained through conscription; South Korean men must complete military service (18 months for army, auxiliary police and marine, 20 months for navy and conscripted firefighter, 21 months for air force and social service, 36 months for alternative service) between the age of 18 and 35. From Wikipedia