Assertion: enlistment | /r/HasProperty | a period of time
Facets:
value: in navies
type: LOCATION
value: in a hostile environment
type: LOCATION
value: usually
type: DEGREE
value: for military personnel
type: OTHER
Source sentences:
text: For military personnel, a tour of duty is usually a period of time spent in combat or in a hostile environment.
text: In navies, a tour of duty is a period of time spent performing operational duties at sea, including combat, performing patrol or fleet duties, or assigned to service in a foreign country; a tour of duty is part of a rotation, where the ship may spend a six-month tour of duty, then spend one month in home port for maintenance, then a period of time on exercises, then return to her tour of duty.[citation needed]