"Mátyás király Bécs előtt".

Matthias Corvinus was known for his military successes and expansionist policies. He focused on strengthening the Kingdom of Hungary and consolidating his power. While he did engage in various military campaigns and conflicts during his reign, none of them were directly related to Vienna.

One notable military campaign led by Matthias Corvinus was his conquest of Lower Austria, which included parts of present-day Austria. However, this occurred after his reign, during the rule of his son, King John Albert.

It's worth mentioning that Vienna played a crucial role in the reign of King Matthias Corvinus, as he had a keen interest in arts and culture. He established an impressive royal library known as the Bibliotheca Corviniana, which housed numerous rare and valuable manuscripts and codices, including works of ancient literature and scientific treatises.