No telephone record, no cell phone, just an old-fashioned flag signal.

At any moment there should be a flurry of flag signals, warning that enemy ships were in sight.

It was getting dark fast now; theVictory couldn't make many more flag signals tonight.

They replaced flag signals and the telegraph as an efficient means of communication.

With flag signals he directed artillery fire on the rebels.

They also display the black flag signals when required.

England expects that every man will do his duty (a famous flag signal).

One conclusion drawn was that flag signals were not a satisfactory way to control the fleet.

So he hadn't seen her leave the flag signal.

Until that time I had only received flag signals to find you.