 Complete the following phrase:  The Prussians in particular developed their light infantry tactics both in theory and in practice during the early Napoleonic era. There was much disagreement over how much emphasis should be placed on Jägers, though, and reform was for the most part at the regimental level by more energetic commanders such as Yorck. It was not until the reorganization of the army led by Scharnhorst that the Jäger corps was strengthened on a national level. Having suffered crippling defeats at Jena and 