Young Arvid Horn, still the king's fast friend, and now one of his aids, following his leader, leaped into the first of the small barges or row-boats that were to take the troops from the frigates to the Danish shore. His young general and king, impatient at the slowness of the clumsy barges, while yet three hundred yards from shore, stood upright in the stern, drew his sword, and exclaimed: "I am wearied with this pace. All you who are for Denmark follow me!" And then, sword in hand, he sprang over into the sea. Arvid Horn quickly followed his royal friend. The next moment generals and ministers, ambassadors and belaced officials, with the troops that filled the boats, were wading waist-deep through the shallow water of the Sound, struggling toward the Danish shore, and fully as enthusiastic as their hasty young leader and king. The Danish musket-balls fell thick around them as the Danish troops sought from their trenches to repel the invaders. "What strange whizzing noise is this in the air?" asked the young king, now for the first time in action. "'Tis the noise of the musket-balls they fire upon you," was the reply. "_Ack_, say you so," said Charles: "good, good; from this time forward that shall he my music." In the face of this "music" the shore was gained, the trenches were carried by fierce assault and King Charles's first battle was won. Two days later, Copenhagen submitted to its young conqueror, and King Frederick of Denmark hastened to the defence of his capital, only to find it in the possession of the enemy, and to sign a humiliating treaty of peace. The boy conqueror's first campaign was over, and, as his biographer says, he had "at the age of eighteen begun and finished a war in less than six weeks." Accepting nothing for himself from this conquest, he spared the land from which his dearly remembered mother had come from the horrors of war and pillage which in those days were not only allowable but expected. King Augustus of Poland, seeing the short work made of his ally the King of Denmark, by this boy king, whom they had all regarded with so much contempt, deemed discretion to be the better part of valor and, as the lad had prophesied, withdrew from Livonia, "going back by the way he came." Then the young conqueror, flushed with his successes, turned his army against his third and greatest enemy, Czar Peter, of Russia, who, with over eighty thousand men, was besieging the Swedish town of Narva.