The Allies successfully wrapped up the siege of Alessandria on 21 July and the Siege of Mantua on 30 July. These important events released 30,000 Coalition troops for field operations. Suvarov placed Konrad Valentin von Kaim with 14,000 Austrians to guard the west of Piedmont and Karl Joseph Hadik von Futak with 11,000 more to observe the alpine passes into Switzerland to the north. Klenau with 5,000 troops at Sarzana was watching the southeast side of Genoa. Kray was ordered to join the main army as quickly as possible. The rest of Suvorov's army was deployed in the area of Alessandria and Tortona. In the meantime, Chasteler was seriously wounded by a canister shot on 17 July during the siege of Alessandria and replaced by another Austrian, Anton von Zach. Despite the pain of his injury, Chasteler produced a new plan for ousting the French from the Ligurian mountains. This plan was put on indefinite hold when the news of the impending French offensive became known.