 Complete the following phrase:  During the first Austrian attempt to relieve the Siege of Mantua, Guieu led a brigade in Pierre Saurets division. Surprised by the attack of Peter Ott on 29 July, Guieu rallied 400 men and withdrew to the Palazzo Martinengo in the village of Salò. Though without food, Guieu withstood a siege by Joseph Ocskays brigade until the 31st, when Sauret drove the Austrians away after a sharp action. During the 