Definition
Engaged in military operations or combat during a war.
在戰鬥中
Many soldiers have died in combat and have earned medals while on active service.
許多士兵在戰鬥中犧牲，並在服役期間獲得了勳章。
His brother was deployed overseas while on active service with the Navy.
他的兄弟在服役於海軍期間被派往海外。
During her time on active service, she was sent on several difficult missions.
在她服役期間，她被派去執行多項艱難的任務。