Frederick Augustus' decision brought the country scarcely any relief. Napoleon, angered at the near defection of the King and at the same time dependent upon the full mobilization of all available forces against the Coalition troops, harshly demanded the full resources of Saxony. In addition, the country suffered under the changing fortunes of war and associated movements and quartering. At the end of August the Allies failed again to defeat Napoleon at the Battle of Dresden. Meanwhile, Saxony became the principal arena of war and Dresden the midpoint of the French army movements. Not until 9 September in Teplice (in the present-day Czech Republic) did Austria conclude its alliance with Prussia and Russia. In September, as Napoleon's troops in Saxony formed up to retreat before the expanded Coalition, there came the first defections to the Allies came within the Saxon army.