1809: Thunder on the Danube

The Franco-Austrian War of 1809 was Napoleon's last victorious war. Napoleon faced the Archduke Charles, the best of the Habsburg commanders, and a reformed Austrian Army that was arguably the best ever fielded by the Danubian Monarchy. The French ultimately triumphed but the margin of superiority was decreasing and all of Napoleon's skill and determination was required to achieve a victorious outcome. Gill tackles the political background to the war, especially the motivations that prompted Austria to launch an offensive against France while Napoleon and many of his veterans were distracted in Spain. Though surprised by the timing of the Austrian attack on April 10th, the French Emperor completely reversed a dire strategic situation with stunning blows that he called his 'most brilliant and most skillful maneuvers'. Following a breathless pursuit down the Danube valley, Napoleon occupied the palaces of the Habsburgs for the second time in four years. The Austrians recovered, however, and Napoleon suffered his first unequivocal repulse at the Battle of Aspern-Essling on the shores of the Danube opposite Vienna. He would win many battles in his future campaigns, but never again would one of Europe's great powers lie broken at his feet. In this respect 1809 represents a high point of the First Empire as well as a watershed, for Napoleon's armies were declining in quality and he was beginning to display the corrosive flaws that contributed to his downfall five years later.

In this third volume John H. Gill brings to a close his magisterial study of the 1809 war between Napoleonic France and Habsburg Austria. This final volume begins with the principal armies of both antagonists recuperating on the Danube's banks. As they prepared for the next encounter, important actions were taking place in distant theaters of war: Eugene brought his army into Hungary and won a crucial victory over Johann on the anniversary of Marengo, Prince Poniatowski's Poles outflanked another Austrian archduke along the Vistula, and future marshal Marmont drove an Austrian force out of Dalmatia to join Napoleon at Vienna. These subsidiary campaigns all set the stage for the clash that would decide the war: the titanic Battle of Wagram. Second only in scale to the three-day slaughter at Leipzig in 1813, Wagram saw more than 320,000 men and 900 guns locked in two days of fury that ended with Austrian retreat. The defeat, however, was not entirely complete and Napoleon had to force yet another major engagement on the Austrians before Charles would accept a ceasefire. This under-appreciated battle at Znaim introduced an extended armistice that finally ended with a peace treaty signed in Vienna in October. Gill makes use of an impressive array of sources to present a lively account that covers the conflict from the diplomacy of emperors to the common soldiers suffering the privations of campaigning and the horrors of battle as they attempt to carry out their duties. Enriched with uncommon illustrations, more than 40 specially prepared maps, and extraordinary order of battle detail, this work concludes an unprecedented English language study of Napoleons last victorious war.