He was not exactly hospitably received. The old Duke of Pommerania would have none of him, begged him to go away, and only when the King pointed to his guns and hinted that he had keys well able to open the gates of Stettin, his capital, did he give in and promise help. The other German princes, with one or two exceptions, were as cravenly short-sighted. They held meetings and denounced the Emperor and his lawless doings, but Gustav they would not help. The princes of Brandenburg and of Saxony, the two Protestant Electors of the empire, were rather disposed to hinder him, if they might, though Brandenburg was his brother-in-law. Only when the King threatened to burn the city of Berlin over his head did he listen. While he was yet laboring with them, recruiting his army and keeping it in practice by driving the enemy out of Pommerania, news reached him of the fall of Magdeburg, the strongest city in northern Germany, that had of its own free will joined his cause.

The sacking of Magdeburg is one of the black deeds of history. In a night the populous city was reduced to a heap of smoking ruins under which twenty thousand men, women, and children lay buried. Not since the fall of Jerusalem, said Pappenheim, Tilly’s famous cavalry leader to whom looting and burning were things of every day, had so awful a visitation befallen a town. Only the great cathedral and a few houses near it were left standing. The history of warfare of the Christian peoples of that day reads like a horrid nightmare. The fighting armies left a trail of black desolation where they passed. “They are not made up of birds that feed on air,” sneered Tilly. Peaceful husbandmen were murdered, the young women dragged away to worse than slavery, and helpless children spitted upon the lances of the wild landsknechts and tossed with a laugh into the blazing ruins of their homes. But no such foul blot cleaves to the memory of Gustav Adolf. While he lived his men were soldiers, not demons. In his tent the work of Hugo Grotius on the rights of the nations in war and peace lay beside the Bible and he knew them both by heart. When he was gone, the fame of some of his greatest generals was smirched by as vile orgies as Tilly’s worst days had witnessed. It is told of John Banér, one of the most brilliant of them, that he demanded ransom of the city of Prix, past which his way led. The city fathers permitted themselves an untimely jest: “Prix giebt nichts—Prix gives nothing,” they said. Banér was as brief: “Prix wird zu nichts—Prix comes to nothing,” and his army wiped it out.

Grief and anger almost choked the King when he heard of Magdeburg’s fate. “I will avenge that on the Old Corporal (Tilly’s nickname),” he cried, “if it costs my life.” Without further ado he forced the two Electors to terms and joined the Saxon army to his own. On September 7, 1631, fifteen months after he had landed in Germany, he met Tilly face to face at Breitenfeld, a village just north of Leipzig. The Emperor’s host in its brave show of silver and plumes and gold, the plunder of many campaigns under its invincible leader, looked with contempt upon the travel-worn Swedes in their poor, soiled garb. The stolid Finns sat their mean but wiry little horses very unlike Pappenheim’s dreaded Walloons, descendants of the warlike Belgæ of Gaul who defied the Germans of old in the forest of the Ardennes and joined Cæsar in his victorious march. But Tilly himself was not deceived. He knew how far this enemy had come and with what hardships cheerfully borne; how they had routed the Russians, written laws for the Poles in their own land, and overthrown armies and forts that barred their way. He would wait for reënforcements; but his generals egged him on, said age had made him timid and slow, and carried the day.

The King slept in an empty cart the night before the battle and dreamed that he wrestled with Tilly and threw him, but that he tore his breast with his teeth. When all was ready in the morning he rode along the front and told his fusiliers not to shoot till they saw the white in the enemy’s eyes, the horsemen not to dull their swords by hacking the helmets of the Walloons: “Cut at their horses and they will go down with them.” In the pause before the onset he prayed with head uncovered and lowered sword, and his voice carried to the farthest lines:

“Thou, God, in whose hands are victory and defeat, look graciously upon thy servants. From distant lands and peaceful homes have we come to battle for freedom, truth and thy gospel. Give us victory for thy holy name’s sake, Amen!”

Tilly had expected the King to attack, but the fiery Pappenheim upset his plans. The smoke of the guns drifted in the faces of the Swedes and the King swung his army to the south to get the wind right. In making the turn they had to cross a brook and this moment Pappenheim chose for his charge. Like a thunderbolt his Walloons fell upon them. The Swedish fire mowed them down like ripened grain and checked their impetuous rush. They tried to turn the King’s right and so outflank him; but the army turned with them and stood like a rock. The extreme mobility of his forces was Gustav Adolf’s great advantage in his campaigns. He revised the book of military tactics up to date. The imperial troops were massed in solid columns, after the old Spanish fashion, the impact of which was hard to resist when they struck. The King’s, on the contrary, moved in smaller bodies, quickly thrown upon the point of danger, and his artillery was so distributed among them as to make every shot tell on the compact body of the enemy. Whichever way Pappenheim turned he found a firm front, bristling with guns, opposing him. Seven times he threw himself upon the living wall; each time his horsemen were flung back, their lines thinned and broken. The field was strewn with their dead. Tilly, anxiously watching, threw up his hands in despair. “This man will lose me honor and fame, and the Emperor his lands,” he cried. The charge ended in wild flight, and Tilly saw that he must himself attack, to turn the tide.

On the double-quick his columns of spearmen charged down the heights, swept the Saxons from the field, and fell upon the Swedish left. The shock was tremendous. General Gustav Horn gave back to let his second line come up, and held the ground stubbornly against fearful odds. Word was brought the King of his danger. With the right wing that had crushed Pappenheim he hurried to the rescue. In the heat of the fight the armies had changed position, and the Swedes found themselves climbing the hill upon which Tilly’s artillery was posted. Seeing this, the King made one of the rapid movements that more than once won him the day. Raising the cry, “Remember Magdeburg!” he carried the position with his Finns by a sudden overwhelming assault, and turned the guns upon the dense masses of the enemy fighting below.

In vain they stormed the heights. Both wings and the centre closed in upon them, and the day was lost. Tilly fled, wounded, and narrowly escaped capture. A captain in the Swedish army, who was called Long Fritz because of his great height, was at his heels hammering him on the head with the butt of his pistol. A staff officer shot him down in passing, and freed his chief. Twilight fell upon a battle-field where seven thousand men lay dead, two-thirds of them the flower of the Emperor’s army. Blood-stained and smoke-begrimed, Gustav Adolf and his men knelt on the field and thanked God for the victory.

Had the King’s friend and adviser, Axel Oxenstjerna, been with him he might have marched upon Vienna then, leaving the Protestant Estates to settle their own affairs, and very likely have ended the war. Gustav Adolf thought of Tilly who would return with another army. Oxenstjerna saw farther, weighing things upon the scales of the diplomatist.

“How think you we would fare,” asked the King once, when the chancellor saw obstacles in their way which he would brush aside, “if my fire did not thaw the chill in you?”