guard duty

Bergdahl was relieved from guard duty, and instead of going to sleep, he fled the outpost on foot.

Not surprisingly, many business connections are made during the long hours of operations, guard duty, and training.

Consequently some of the regular regiments who had been doing guard duty in the capital were despatched to the front.

It so happened that the day he visited us, I was performing guard duty around the camp.

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

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

I learned quite lately that he was not dead, but that his company was doing guard duty at this place.