National Youth Service Corps
The National Youth Service Corps (NYSC) is a mandatory, post-tertiary scheme set up by the Nigerian government during the military regime of Head of State, Yakubu Gowon, to "reconstruct, reconcile and rebuild the country after the Nigerian Civil war". There is no military conscription in Nigeria, but since 1973, graduates of universities and polytechnics have been required to take part in the National Youth Service Corps program for one year.
Source: Wikipedia — National Youth Service Corps (CC BY-SA 4.0)