The campaign began in October, with several clashes in Swabia. At the first, near the Bavarian town of Wertingen, northwest of Augsburg, on 8 October, Murat's Cavalry Corps and grenadiers of Lannes' V Corps surprised an Austrian force half their size. The Austrians had assembled in line, and the cavalry and grenadiers cut them down before the Austrians could form their defensive squares. Nearly 3,000 were captured. A day later, at Günzburg immediately south of the Danube, the French again met an Austrian force; General Mack could not decide on a plan, and the French 59th Regiment of the Line stormed a bridge over the Danube, and, in a humiliating episode, chased two large Austrian columns toward Ulm. In this action, the French secured an important bridgehead on the Danube River.