active duty

基本解释

I served two more years on active duty, with one year overseas.
我服務了兩年多的現役，其中一年在海外。
The company also said it regained a contract to provide coverage for 3 million active duty and retired military members and their families in several Southern states.
這家公司同時稱其已恢複了一項曏幾個南部各州近3百萬現役及退休軍事成員及他們的家庭提供保險服務的郃同。
A vote on the Flag Bill proposed by a group of retired and active duty generals in the army-appointed parliament was deferred on Thursday to allow a committee to study it.
《國旗法》是由一批退役和現役的將軍們在軍人任命的議會中提出的。對《國旗法》的投票周四被推遲，以便讓一個委員會對其進行研究。

Americans who attend these four-year colleges must serve at least five years of active duty.
General MacArthur had been recalled to active duty by President Franklin Roosevelt.
Of the few who have been identified, one is an active duty army general accused of being head of the military wing of the conspiracy, and another is an opposition political figure said to be leader of the civilian wing.

You give active duty soldiers, wounded warriors, veterans all a VIP experience at races.
WHITEHOUSE: President Obama Honors Tony Stewart’s NASCAR Sprint Cup Championship

Someone who is on active service is taking part in a war as a member of the armed forces.