The reformers and much of the public called for Frederick William III to ally with the Austrian Empire in its 1809 campaign against France. When the cautious king refused to support a new Prussian war, however, Schill led his hussar regiment against the occupying French, expecting to provoke a national uprising. The king considered Schill a mutineer, and the major's rebellion was crushed at Stralsund by French allies. The Franco-Prussian treaty of 1812 forced Prussia to provide 20,000 troops to Napoleon's "Grande Armée", first under the leadership of Grawert and then under Yorck. The French occupation of Prussia was reaffirmed, and 300 demoralized Prussian officers resigned in protest.