He was wounded at Wagram, and distinguished during the operations in Italy in 1813 and 1814.
In June 1809, during his campaign against Austria, Sir John Stuart with an Anglo-Sicilian force sailed northwards, captured Ischia and threw Murat into great alarm; but on the news of the Austrian defeat at Wagram Stuart sailed back again.
At the same time Napoleon threatened openly to crush Austria, and in 180 9 he carried out his threat by defeating the Austrian armies at Wagram and elsewhere, and dictating the treaty of Schonbrunn (October 14).
The failure of the archduke John to arrive in time at Wagram (5th of July), the lack of support accorded by the Spaniards to Wellesley before and after the battle of Talavera (28th of July), and the slowness with which the British government sent forth its great armada against Flushing and Antwerp, a fortnight after Austria sued for an armistice from Napoleon, enabled that superb organizer to emerge victorious from a most precarious situation.
130) dealing with his fatal mistake in not dismembering Austria after Wagram, and in marrying an Austrian princess - "There I stepped on to an abyss covered with flowers"; or that again (iii.