guard duty

Besides these, the office all day, and guard duty every third night.

But what he didn't know about guard duty was hardly worth knowing.

We must tell Willy what we suspect and assign him to guard duty.

Richard was one of those who had been detailed from Company D, for guard duty.

It may interest you to know where I performed my first guard duty.

The remainder were in reserve, or on guard duty at various points.

I shall make you do guard duty this evening when we are out in the park.

“I did not,” answered one of the cadets who had been on guard duty.

And you would like to do guard duty over German prisoners, eh?

Tanager is uniformed first for conquest, then for guard duty.