In March, Masséna's army occupied Switzerland, preparing an attack against Tyrol through Vorarlberg. However, the defeats of French armies in Germany and Italy forced him to return to the defensive. Taking over Jourdan's army, he pulled it back into Switzerland to Zürich. Archduke Charles pursued him and drove him back at the First Battle of Zurich. When Charles left Switzerland for the Netherlands, the allies were left with a smaller army under Korsakov, who was ordered to unite with Suvorov's army from Italy. Masséna attacked Korsakov, crushing him at the Second Battle of Zurich, and forcing Suvorov to retreat with considerable loss. Russia abandoned the Second Coalition soon after this debacle.