fatigue duty

English Thesaurus

1. labor of a nonmilitary kind done by soldiers (cleaning or digging or draining or so on) (noun.act)

hypernym	:	assignment, duty assignment,
definition	:	a duty that you are assigned to perform (especially in the armed forces) (noun.act)

domain category	:	armed forces, armed services, military, military machine, war machine,
definition	:	the military forces of a nation (noun.group)