Napoleonic Wars - War of The Fifth Coalition 1809

War of The Fifth Coalition 1809

The Fifth Coalition (1809) of the United Kingdom and Austria against France formed as the UK engaged in the Peninsular War against France.

Again the UK stood alone, and the sea became the major theatre of war against Napoleon's allies. During the time of the Fifth Coalition, the Royal Navy won a succession of victories in the French colonies.

On land, the Fifth Coalition attempted few extensive military endeavours. One, the Walcheren Expedition of 1809, involved a dual effort by the British Army and the Royal Navy to relieve Austrian forces under intense French pressure. It ended in disaster after the Army commander, John Pitt, 2nd Earl of Chatham, failed to capture the objective, the naval base of French-controlled Antwerp. For the most part of the years of the Fifth Coalition, British military operations on land apart from in the Iberian Peninsula remained restricted to hit-and-run operations executed by the Royal Navy, which dominated the sea after having beaten down almost all substantial naval opposition from France and its allies and blockading what remained of France's naval forces in heavily fortified French-controlled ports. These rapid-attack operations were aimed mostly at destroying blockaded French naval and mercantile shipping and the disruption of French supplies, communications, and military units stationed near the coasts. Often, when British allies attempted military actions within several dozen miles or so of the sea, the Royal Navy would arrive and would land troops and supplies and aid the Coalition's land forces in a concerted operation. Royal Navy ships even provided artillery support against French units when fighting strayed near enough to the coastline. However, the ability and quality of the land forces governed these operations. For example, when operating with inexperienced guerrilla forces in Spain, the Royal Navy sometimes failed to achieve its objectives simply because of the lack of manpower that the Navy's guerrilla allies had promised to supply.

Economic warfare also continued: the French Continental System against the British naval blockade of French-controlled territory. Due to military shortages and lack of organisation in French territory, many breaches of the Continental System occurred as French-dominated states engaged in illicit (though often tolerated) trade with British smugglers. Both sides entered additional conflicts in attempts to enforce their blockade; the British fought the United States in the War of 1812 (1812–15), and the French engaged in the Peninsular War (1808–14). The Iberian conflict began when Portugal continued trade with the UK despite French restrictions. When Spain failed to maintain the continental system, the uneasy Spanish alliance with France ended in all but name. French troops gradually encroached on Spanish territory until they occupied Madrid, and installed a client monarchy. This provoked an explosion of popular rebellions across Spain. Heavy British involvement soon followed.

Austria, previously an ally of France, took the opportunity to attempt to restore its imperial territories in Germany as held prior to Austerlitz. Austria achieved a number of initial victories against the thinly spread army of Marshal Berthier. Napoleon had left Berthier with only 170,000 men to defend France's entire eastern frontier (in the 1790s, 800,000 men had carried out the same task, but holding a much shorter front).

Napoleon had enjoyed easy success in Spain, retaking Madrid, defeating the Spanish and consequently forcing a withdrawal of the heavily out-numbered British army from the Iberian Peninsula (Battle of Corunna, 16 January 1809). But when he left, the guerrilla war against his forces in the countryside continued to tie down great numbers of troops. Austria's attack prevented Napoleon from successfully wrapping up operations against British forces by necessitating his departure for Austria, and he never returned to the Peninsular theatre. In his absence the French situation in Spain deteriorated, and then became dire when Sir Arthur Wellesley arrived to take charge of British-Portuguese forces.

The Austrians drove into the Duchy of Warsaw, but suffered defeat at the Battle of Raszyn on 19 April 1809. The Polish army captured West Galicia following its earlier success.

Napoleon assumed personal command in the east and bolstered the army there for his counter-attack on Austria. After a few small battles, the well-run campaign forced the Austrians to withdraw from Bavaria, and Napoleon advanced into Austria. His hurried attempt to cross the Danube resulted in the massive Battle of Aspern-Essling (22 May 1809) — Napoleon's first significant tactical defeat. But the Austrian commander, Archduke Charles, failed to follow up on his indecisive victory, allowing Napoleon to prepare and seize Vienna in early July. He defeated the Austrians at Wagram, on 5–6 July. (It was during the middle of that battle that Marshal Bernadotte was stripped of his command after retreating contrary to Napoleon's orders. Shortly thereafter, Bernadotte took up the offer from Sweden to fill the vacant position of Crown Prince there. Later he would actively participate in wars against his former Emperor.)

The War of the Fifth Coalition ended with the Treaty of Schönbrunn (14 October 1809). In the east, only the Tyrolese rebels led by Andreas Hofer continued to fight the French-Bavarian army until finally defeated in November 1809, while in the west the Peninsular War continued.

In 1810, the French Empire reached its greatest extent. On the continent, the British and Portuguese remained restricted to the area around Lisbon (behind their impregnable lines of Torres Vedras) and to besieged Cadiz. Napoleon married Marie-Louise, an Austrian Archduchess, with the aim of ensuring a more stable alliance with Austria and of providing the Emperor with an heir (something his first wife, Josephine, had failed to do). As well as the French Empire, Napoleon controlled the Swiss Confederation, the Confederation of the Rhine, the Duchy of Warsaw and the Kingdom of Italy. Territories allied with the French included:

• the Kingdom of Spain (under Joseph Bonaparte, Napoleon's elder brother)
• the Kingdom of Westphalia (Jérôme Bonaparte, Napoleon's younger brother)
• the Kingdom of Naples (under Joachim Murat, husband of Napoleon's sister Caroline)
• the Principality of Lucca and Piombino (under Elisa Bonaparte (Napoleon's sister) and her husband Felice Baciocchi);

and Napoleon's former enemies, Prussia and Austria.