Ranking Officer Service is divided into Standing Ranking Officer Service and Reserved Ranking Officer Service.
The Non Commission Officer is also divided into Standing Non Commissioned Officer Service and Reserved Non Commissioned Officer Service.

Standing Ranking Officer is classified into the following:
1- Active Service:Refering to the service of those male with qualified age and currently in service or Non Commissioned Officers of Backup Service, Enlisted Soldier,with a qualified records after taking a voluntary test, or after receiving the required Ranking Officer's Basic Education;Or depends on the Military needs, an outstanding Reserved Officer who would like to be transferred voluntarily after serving a certain period of Active Service.
2- Backup Service:Refering to a service for those have been suspended from Active Service, Retired, Lifted from mobilization, until exempted, prohibited, losing the citizenship of the Republic of China, or discharged.

Standing Non Commissioned Officer Service is classified into the following:
1- Active Service:Refering to a service for those male with qualified age and currently in service or Enlisted Soldier of Backup Service, with a qualified records after taking a voluntary test, or after receiving the required Non Commission Officer's Basic Education;Or depends on the Military needs, an outstanding Reserved Non Commission Officer who would like to be transferred voluntarily after serving a certain period of Active Service.
2- Backup Service:Refering to a service for those have been suspended from Active Service, Retired, Lifted from mobilization, until exempted, prohibited, losing the citizenship of the Republic of China, or discharged.

The Reserved Ranking Officer Service refers to the service of the following personnel,based on his performance records of the voluntary test taken, received less than a year of Reserved Officer's Basic Education, and had taken a necessary six months training in a Military Agency or Troops:
1- Having served more than two years in the Standing Non Commissioned Officer Service.
2- Having received a Reserved Non Commission Officer's Basic Education with outstanding records.
3- Having graduated from a Public or registered Private Vocational Schools (or above), or had possessed a technical ability of the same level.
4- Having graduated from a Senior High School or school with the same level, or an outstanding of an existing Non Commission Officer, Enlisted Soldier who had passed an entrance examination to a Military Academy or had completed an Ranking Officer Training Class.
Depending on the military needs, the above personnel are required to serve a certain period of the existing Reserved Ranking Officer Service.
Those Non Commissioned Officers who have been promoted to a Ranking Officers in the battle field, can serve an Active Ranking Officer's Service.

The Reserved Ranking Officer Service refers to the service of the following personnel，based on his performance records of the voluntary test taken, received less than eight months of Reserved Officer's Basic Education, and had taken a necessary four months training in a Military Agency or Troops：
1- Having served as a Standing Soldier Service with outstanding records.
2- Having served as a Replacement Service with outstanding records.
3- Having graduated from a Public or registered Private Senior High Schools (or above), or had possessed a technical ability of the same level.
4- An outstanding of an existing Enlisted Soldier who had passed an entrance examination to a Military Academy
or had completed an Non Commissioned Officer Training Class.
Depending on the military needs, the above personnel are required to serve a certain period of the existing Reserved Non Commissioned Officer Service.
Those Enlisted Soldiers who have been promoted to a Non Commissioned Officers in the battle field, can serve an Reserved Non Commissioned Officer's Service.

The Regulations of Selection and Training for Military Services of the Reserved Ranking Officer and Reserved Non Commissioned Officer stated in the above two articles are instituted by the Ministry of National Defense together with the related agencies.
Service Age Man, Reserved Military Man and Replacement Soldiers that have the qualifications stated in Item-1 of Article-9 and Item-1 of the above Article, except from passing the voluntary examinations, if required by the National Defense Military, can be recruited or mobilized to attend educations of the Reserved Ranking Officer or Reserved Non Commission Officer in accordance with the law.

Those who have attended and passed the Basic Educations of the Standing Ranking Officer or Standing Non Commission Officer can separately be appointed as an Officer or appointed a position in accordance with the law, and join the Standing Ranking Officer or Standing Non Commission Officer service.
Those who have attended and passed the Basic Educations of the Reserved Ranking Officer or Reserved Junior Office, and was issued with an appropriate Certificate of a Reserved Ranking Officer or Reserved Non Commissioned Officer, can serve in the Reserved Ranking Officer or Reserved Non Commissioned Officer Service, or after being appointed a rank according to the law, can serve in an Active Service as regulated on Item-2 of Article-9, and Item-2 of Article-10.

Those receiving Ranking Office, Non Commission Officer education, but not able to complete due to sickness or other causes, and according to the law still have to serve in the Military Service, the period which they have enlisted and military training can be deducted from the Military Service terms.
The Regulations of Suspension / Termination / Dismissal and Military Service Processes for those being educated as stated in the above item, are determined by the Ministry of National Defense.

Attendance and Separation of Military Service of a Ranking Officer and Non Commissioned Officer are abided by other laws.