Half an hour later Hero lifted his head from between his paws and listened. Something seemed calling him. He did not know what. Being only a dog, he could not analyse the thoughts passing through his brain. A restlessness seized him. He longed to be back among the familiar sights and sounds of soldier life. This little play camp, where children tried to make him romp continually, was not home. Locust was not home. This strange new country full of unfamiliar faces and foreign voices was not home. But the orderly’s voice reminded him of it. Over there were bearded men and deep voices, and strong hands, guns, and the smell of powder; fife and drum, and canteens and knapsacks; things that he had seen daily in his soldier life.
Was it some call to duty that thrilled him, or only a homesick longing? As he listened with head up, there came ringing, clear and silvery through the night, the bugle notes from the other camp. At the first sound Hero was on his feet. He moved noiselessly toward the tent flap, only partially fastened, and flattening himself against the ground wriggled out.
And if he gave no thought to the little mistress, dreaming inside the tent, if he left without regret the life of ease and loving care to which she had brought him, it was not because he was ungrateful, but because he did not understand. To him his old life woke and called him in the bugle’s blowing. To him duty did not mean soft cushions, and idle days, and the following of a happy-hearted child at play. It meant long marches and the guarding of ambulances and the rescue of the dead and dying. A true soldier’s heart beat in the dog’s shaggy body, and, obedient to his instinct and training, he answered the summons when it sounded. With long, swinging steps he set out in the direction of the bugle-call, taking the road through the woods that the wagon had travelled that day, and down which he had watched the orderly disappear. No, not deserting his duty, but, as he understood it, hurrying back, with faithful heart to the cause that had always claimed him.
Now and then the moon, coming out fitfully from, behind the clouds, shone on his great tawny body, touching the white curls of his ruff with a line of silver. Then he would be lost in darkness again. But he swung on unerringly, until he was almost in sight of the camp. A little farther on a sentry paced up and down the picket-line that ran along the edge of the woods. Hero travelled on toward him, the dry dead leaves rustling under his paws, and now and then a twig crackling with his weight.