national service

剑桥词典

the system in some countries by which young people , especially men, are ordered by law to spend a period of time in the armed forces
兵役
In some countries , everyone does two years ' national service after leaving school . 在有些国家，所有人离开学校后都要服两年兵役。
In Britain , national service was abolished in 1962. 英国在1962年废除了兵役制。
比较
selective service 返回 national service