noun
period of service; tour of duty; period of work
Refers to a defined period during which one serves in a role, especially in military, government, or organizational contexts.
彼の服務期間は三年間です。
His period of service is three years.
服務期間が終わったら、故郷に帰るつもりだ。
I plan to return to my hometown once my tour of duty is over.
Compound of 服務 (service, duty) and 期間 (period, term).