From Halle the brigade marched to Erfurt, in the famous forest of Thuringia, and was afterwards destined to take part in the reduction of the Circle of Franconia. From Erfurt the brigade advanced, with other troops, through the forest of Thuringia,--proceeded a distance of one hundred and eleven miles along difficult roads, and took by capitulation six large towns, in the short period of eight days. Having arrived at _Wurtzburg_, the town soon surrendered; but a strong castle, called _Marienberg_, standing on an eminence on the other side of the river Maine, being garrisoned by a thousand men, well provided with every means of defence, held out against the Swedish arms, and the Scots were selected to commence operations against this place. The approach was hazardous beyond description; one arch of the bridge was blown up, and the batteries raked the bridge from one end to the other. A few daring Scots musketeers, however, passed the river in small boats on the 5th of October, and, leaping on shore in the face of a sharp fire, were soon warmly engaged. A plank had, in the meantime, been laid across the broken arch of the bridge, and a number of veteran Scots running across one after another, joined their companions in the fight, and a lodgment was effected beyond the river, and some advantage gained. The castle was afterwards taken by storm; and this having been deemed an impregnable fortress, it was found well stored with corn, wine, ammunition, and treasure; and small arms were found for seven thousand men.