active service

British  

noun

1. military duty in an operational area

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Example Sentences

SINGAPORE—China has put its largest and most sophisticated aircraft carrier into active service, boosting Beijing’s quest to create a formidable oceangoing navy that can challenge U.S. power in the Asia-Pacific region and beyond.

From The Wall Street Journal

Washington has 11 aircraft carriers in active service, though one of them is scheduled to be decommissioned next year.

From The Wall Street Journal

Hundreds of thousands of reservists in the armed forces, the IDF, want to get back to their lives after many months in uniform on active service.

From BBC

Following this, Hegseth called for a 20% cut of four-star generals in active service and in the National Guard.

From Salon

"The aircraft will return to active service once repairs and safety checks have been completed," it added.

From BBC