Reserve Military Training Units (RMTU) (Korean: 교도대, Chinese: 敎導隊, literally translated as Correctional Guard or Guidance Team) are a component of the reserve forces of North Korea.
The RMTU, which was formed in 1963[1] consist of 17- to 50-year-old males and 17- to 30-year-old females who finished their mandatory military service in the Korean People's Army or do not serve for some reason.
[2] When males reach age 46, they are assigned to the Worker-Peasant Red Guards.
[4] The country maintains large reserve force as part of the Four Military Lines policy (Korean: 사대군사노선) advocated by Kim Il-sung.
Members of the RMTU needs to have certain level of body fitness, and those who do not meet the required standards must serve instead in the Worker-Peasant Red Guards.