Conversation so far:
what is Archduke Charles, Duke of Teschen's legacy?
The caution which the Archduke Charles, Duke of Teschen preached so earnestly in his strategic works, he displayed in practice only when the situation seemed to demand it.
what was Archduke Charles, Duke of Teschen's biggest achievement?
According to the Encyclopædia Britannica Eleventh Edition, Archduke Charles, Duke of Teschen's campaign of 1796 is considered almost faultless.
what tactics did Archduke Charles, Duke of Teschen use in the 1796 campaign?
Archduke Charles, Duke of Teschen advised that nothing should be hazarded unless one's army is completely secure, a rule which he himself neglected with such brilliant results in 1796.
has Archduke Charles, Duke of Teschen influenced other military commanders?
The influence of these antiquated principles was shown in the maintenance of Königgrätz-Josefstadt in 1866 as a strategic point, which was preferred to the defeat of the Prussian armies.

Question: Are there any other interesting aspects about this article?
Self-contained rewrite: Are there any other interesting aspects about Archduke Charles, Duke of Teschen's legacy besides his legendary caution, his faultless 1796 campaign, and his influence on Königgrätz-Josefstadt in 1866?