The War of the Fifth Coalition was the fifth of the seven coalition wars that defined the Napoleonic Era. It was fought between April and October of 1809.
Napoleon at Wagram (1809). Source: Napoleon In Wagram July 1809 by Joseph Louis Hippolyte Bellange
Napoleon’s France (allied with the Confederation of the Rhine, Holland plus several smaller states) faced off against an Austrian dominated coalition that included Hungary, Tyrol, Britain, Sicily and Sardinia.
The coalition has earlier been given a boost by a Spanish victory at the Battle of Bailen in 1808 (part of the Peninsular War). The defeat caused much consternation among Napoleon’s Allies. This was further compounded by the backroom political deals instigated by France’s foreign minister Talleyrand and Russia’s Tsar Alexander I at the Congress of Erfut (October 1808).
The ever scheming Charles-Maurice de Talleyrand, prince de Bénévent- French diplomat and political chameleon. He survived both the turbulence of the French Revolution and the Napoleonic era. Source Charles-Maurice de Talleyrand, prince de Bénévent | French statesman and diplomat
The Austrians seized the moment and struck first in the War winning the Battle of Aspen-Essling. However the French regrouped and defeated the Austrians at Wagram. A final French victory occurred at the Battle of Znaim. In October 1809 the Treaty of Schönbrunn was signed ending the war. Austria gave up land to Bavaria (Tyrol and Salzburg). The Russians received the Duchy of Warsaw and France took control over much of Austria’s Adriatic coastal possessions (Ilyrian provinces) leaving her landlocked, 3.5 million less in population and having to pay a war debt of 75 million francs to France.
Map of the Battle of Wagram - Map of the battle of Wagram
Worth noting is that although the French won the critical battle of the war - Wagram - it came at a heavy price. French losses were placed at 27,500 compared to the Austrian death toll of 23,750.Battle of Wagram, 5-6 July 1809
On a grander scheme. The war halted hostilities in non-Iberian Europe until 1812 when the France invaded Russia.
Further reading