“You must hold it to the last, Hepburn, and then, if you can, fall back to Wurtzburg; even a day's delay will enable me to call in some of the detachments and to prepare to receive Tilly.”
Without halting, the little column marched sixteen miles, and then, crossing the bridge over the Maine, entered Ochsenfurt.
It was occupied by a party of fifty Imperialist arquebusiers, but these were driven headlong from it. The night was extremely dark, all were ignorant of the locality, and the troops were formed up in the marketplace to await either morning or the attack of Tilly. Fifty troopers were sent half a mile in advance to give warning of the approach of the enemy. They had scarcely taken their place when they were attacked by the Imperialists, who had been roused by the firing in the town. The incessant flash of fire and the heavy rattle of musketry told Gustavus that they were in force, and a lieutenant of Lumsden's regiment with fifty musketeers was sent off to reinforce the cavalry. The Imperialists were, however, too strong to be checked, and horse and foot were being driven in when Colonel Munro sallied out with a hundred of his own regiment, and the Imperialists after a brisk skirmish, not knowing what force they had to deal with, fell back.
As soon as day broke the king and Hepburn made a tour of the walls, which were found to be in a very bad condition and ill calculated to resist an assault. The Imperialists were not to be seen, and the king, fearing they might have marched by some other route against Wurtzburg, determined to return at once, telling Hepburn to mine the bridge, and to blow it up if forced to abandon the town.
Hepburn at once set to work to strengthen the position, to demolish all the houses and walls outside the defences, cut down and destroy all trees and hedges which might shelter an enemy, and to strengthen the walls with banks of earth and platforms of wood. For three days the troops laboured incessantly; on the third night the enemy were heard approaching. The advanced troopers and a half company of infantry were driven in, contesting every foot of the way. When they reached the walls heavy volleys were poured in by the musketeers who lined them upon the approaching enemy, and Tilly, supposing that Gustavus must have moved forward a considerable portion of his army, called off his troops and marched away to Nuremberg. Two days later Hepburn was ordered to return with his force to Wurtzburg.
The king now broke up his camp near Wurtzburg, and leaving a garrison in the castle of Marienburg and appointing Marshal Horn to hold Franconia with 8000 men, he marched against Frankfort-on-the-Maine, his troops capturing all the towns and castles on the way, levying contributions, and collecting great booty. Frankfort opened its gates without resistance, and for a short time the army had rest in pleasant quarters.
The regiments were reorganized, in some cases two of those which had suffered most being joined into one. Gustavus had lately been strengthened by two more Scottish regiments under Sir Frederick Hamilton and Alexander Master of Forbes, and an English regiment under Captain Austin. He had now thirteen regiments of Scottish infantry, and the other corps of the army were almost entirely officered by Scotchmen. He had five regiments of English and Irish, and had thus eighteen regiments of British infantry.
At Frankfort he was joined by the Marquis of Hamilton, who had done splendid service with the troops under his command. He had driven the Imperialists out of Silesia, and marching south, struck such fear into them that Tilly was obliged to weaken his army to send reinforcements to that quarter. By the order of Gustavus he left Silesia and marched to Magdeburg. He had now but 3500 men with him, 2700 having died from pestilence, famine, and disease. He assisted General Banner in blockading the Imperialist garrison of Magdeburg, and his losses by fever and pestilence thinned his troops down to two small regiments; these were incorporated with the force of the Duke of Saxe-Weimar, and the Marquis of Hamilton joined the staff of Gustavus as a simple volunteer.
The king now determined to conquer the Palatinate, which was held by a Spanish army. He drove them before him until he reached the Rhine, where they endeavoured to defend the passage by burning every vessel and boat they could find, and for a time the advance of the Swedes was checked. It was now the end of November, the snow lay thick over the whole country, and the troops, without tents or covering, were bivouacked along the side of the river, two miles below Oppenheim. The opposite bank was covered with bushes to the water's edge, and on an eminence a short distance back could be seen the tents of the Spaniards.
“If it were summer we might swim across,” Nigel Graheme said to Malcolm; “the river is broad, but a good swimmer could cross it easily enough.”