Conversation so far:
what is the Napoleonic Wars?
In 1797 he was sent to arrest the victorious march of General Bonaparte in Italy.
What became of it?
he conducted the retreat of the over-matched Austrians with the highest skill.
What other things happened during the Napoleonic Wars?
In the short and disastrous war of 1805 Archduke Charles commanded what was intended to be the main army in Italy.
what happened with Archduke Charles?
Austria sustained defeat on the Danube, and the archduke was defeated by Massena in the Battle of Caldiero.
What happened after he was defeated?
he began his active work of army reorganization, which was first tested on the field in 1809.

Question: What happened after he tested the army reorganization?
Self-contained rewrite: What happened after Archduke Charles tested the army reorganization in 1809?