Conversation so far:
what were the Napoleonic Wars for Archduke Charles, Duke of Teschen?
In 1797 Archduke Charles, Duke of Teschen arrested the victorious march of General Bonaparte in Italy, and he conducted the retreat of the over-matched Austrians with the highest skill.

Question: What became of it?
Self-contained rewrite: What became of Archduke Charles, Duke of Teschen after arresting the victorious march of General Bonaparte in Italy?