On the Federal side, public confidence and the morale of the army grew. As soon as the new government was installed, Dufour left Fribourg for central Switzerland with his army. He left the western theatre of operations to Rillet-Constant, who was allowed to shift his headquarters to the Chablais, but was forbidden to take any unilateral action against Valais without Dufour's direct order. By 15 November, the federal forces passed through Bern and reached Aarau on the evening of the 16th. On the morning of 17 November, the troops of Uri with some reinforcements from Nidwald advanced into Ticino towards Airolo, which fell, then the day after towards Faido and on the 21st towards Biasca, where they stopped to await reinforcements. But the first to be reinforced were the Ticinesi, who received the support of some battalions from the Grisons, which arrived on the 22nd. The Lucerne campaign Preparations and the surrender of Zug In Aarau, Dufour prepared his forces and his battle plan until November 20. He declined to equip his forces with Congreve rockets offered to him by the local arsenal, writing that he intended to "avoid as far as possible to give this war a violent character which cannot but harm our cause.". To the surprise of both sides, the parliament of the canton of Zug voted for surrender on 21 November by a large majority. The federal troops which entered the city of Zug unopposed the day after were acclaimed by the population, and a few months later, a new government would be elected. Dufour launched his principal offensive according to plan on November 23: The 4th (Ziegler) and the 5th divisions (Gmür) followed the Reuss valley to the south, each on one side. They were supported by the 3rd division (von Donats) descending along the Suhr until Sursee, and by the 2nd division (Burckhardt), which left Langenthal to arrive at the Reuss north of Lucerne by way of Willisau and Ruswil. The reserve artillery was concentrated on the bridgehead of Gisikon, which set up the main battle between the left bank of the Reuss and the lake of Zug, with the Lucernese troops caught between five columns of troops arriving from five different directions. Battle of Gisikon Near Gisikon, the federal army constructed several pontoon bridges to cross the Reuss. At this point, the Sonderbund commander, von Salis-Soglio, had concentrated his troops on an elevation,