The orderly repeated them in an undertone, then, turning to Hero, gave the order in a clear, deep voice, that seemed to thrill the dog with its familiar ring.

Instantly at the sound he started out across the field.

Not a thing that had been taught him in his long, careful training was forgotten.
The first man he found was lying in a ditch, apparently desperately wounded.

Hero allowed him to help himself from his flask, and drag a bandage from the bags on his back.

Then, standing with his hind feet in the ditch and his fore feet resting on the bank above him, he gave voice until the men by the ambulance heard him, and came toward him carrying a stretcher.
"Look at him!" exclaimed Mrs.Walton, who with the party and several of the officers had walked down to the hospital tent.