ten o'clock
From every nook and corner , from every shadow and across every open space , through the hot breath of the night , came the moans of thousands , and louder than all the long agonizing cries for water . Many a man in grey crawled over the ragged rocks to press his canteen to the lips of his dying enemy in blue , and many a boy in blue did as much for the man in grey . Fifteen thousand wounded men lay there through the long black hours . At ten o'clock a wounded Christian soldier began to sing one of the old , sweet hymns of faith , whose words have come ringing down the ages wet with tears and winged with human hopes . In five minutes ten thousand voices of blue and grey , some of them quivering with the agony of death , had joined . For two hours the woods and hills rang with the songs of these wounded men . All through this pitiful music the Confederates were massing their artillery on Seminary Ridge , replacing their wounded horses and refilling their ammunition chests .