 Complete the following phrase:  Frederick now reappeared and won the most brilliant victory of the age at Leuthen. Daun was present on that field, but was not blamed for the disaster, and when Prince Charles resigned his command, Daun was appointed in his place. With the campaign of 1758 began the war of manoeuvre in which Daun, though missing some opportunities to crush the Prussians through over-caution, at least maintained a steady and cool resistance to the fiery strategy of Frederick. In 1758 Major-General Laudon, acting under Dauns instructions, forced the king to raise the siege of Olmütz 