野战勤务

例句：

1. 1. The army's field service is essential for maintaining the troops' morale.
   军队的野外服务对于保持士兵士气至关重要。
2. 2. The field support team was responsible for providing medical assistance during the battle.
   野战支援队负责在战斗中提供医疗援助。
3. 3. The military has implemented a new system to improve field service efficiency.
   军方已经实施了一个新的系统来提高野外服务效率。