Children in the military, including state armed forces, non-state armed groups, and other military organizations, may be trained for combat, assigned to support roles, such as cooks, porters/couriers, or messengers, or used for tactical advantage such as for human shields, or for political advantage in propaganda. Children have been recruited for participation in military operations and campaigns throughout history and in many cultures.

During the first and second civil conflicts which took place in the Democratic Republic of the Congo (DRC), all sides involved in the war actively recruited or conscripted child soldiers, known locally as Kadogos which is a Swahili term meaning "little ones". In 2011 it was estimated that 30,000 children were still operating with armed groups. The United Nations Organization Stabilization Mission in the Democratic Republic of the Congo (MONUSCO), released a report in 2013 which stated that between 1 January 2012 and August 2013 up to 1,000 children had been recruited by armed groups, and described the recruitment of child soldiers as "endemic".