Diplomatic Assignments

noun a period of time spent in military service or as a working assignment

preposition a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause

• The soldier completed his tour of duty in the war-torn country.
• After his tour of duty, the soldier was looking forward to going home.
• I heard that Jake's tour of duty got extended for another month.
• Working in customer service feels like a never-ending tour of duty.