 Complete the following phrase:  Wurmser was reinforced once again to compensate for some 20,000 losses sustained in the past two months and made an attempt to relieve the siege of Mantua. Some 45,000 Austrian troops were left behind to guard against any new French offensive whilst the main body of the Austrian army moved on Mantua. At Rovereto on 4 September, Bonaparte inflicted a heavy defeat on the Austrians and was then well-placed to strike at the rear of Wurmsers army. Reacting slowly to this new threat, the Austrians were again defeated at the 