THE DIPLOMATIC REVOLUTION, 1743–74
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had to be transported from the Austrian Netherlands to resist the Jacobites, and their failure
to defeat the outnumbered prince in late 1745 ensured that they could not be sent back to the
continent in time to fight the French at the beginning of the 1746 campaign.
As with the earlier death of the Emperor Charles VI in 1740, a major opportunity
appeared to beckon. The prospect of a favourable result in a War of the British Succession
led Louis XV to sign the Treaty of Fontainebleau with the Pretender on 24 October 1745. By
it, Louis recognized him as King of Scotland, and promised to send military assistance and to
recognize him as King of England as soon as this could be shown to be the wish of the nation.
An expeditionary force, under the Duke of Richelieu, was prepared at Dunkirk, but delays
in its preparation, poor weather, British control of the Channel, and news of the Jacobite
retreat from Derby on 6 December 1745 led to its cancellation. Charles Edward was routed
at Culloden on 27 April 1746.
This ended the best French chance to knock out one of their leading opponents until the
Napoleonic invasion of Austria in 1805. Such opportunities were rare in ancien régime
warfare, not because goals were limited, but because of the combination of the constraints of
distance, and the nature of symmetrical warfare (fighting opponents with similar military
systems). France herself benefited from this situation. Even when hard pressed, as in 1675,
1708 and 1792, her centres of power were not taken and no French government fell as a result
of invasion until 1814, followed by 1815, 1870 and 1940.
In the 1740s the French had better success in the Low Countries than in Britain. British
hopes that the Austrian Netherlands could serve as the base for an invasion of France were
wrecked in 1745 when Marshal Saxe won the battle of Fontenoy (11 May) and captured
much of the Austrian Netherlands. He was crowned with laurels at the Paris Opéra on 18
March 1746. Brussels, Antwerp, Mons, Charleroi and Namur fell in 1746. Saxe defeated his
opponents at Roucoux (11 October 1746) and Lawfeldt (2 July 1747). The danger that the
United Provinces would be overrun – in 1748 Saxe easily took Maastricht – helped to lead
the British to negotiate for peace seriously.
Negotiations had been conducted for much of the war, but most of the powers had fought
on, hopeful of success, fearful of the consequences of abandoning their allies, and distrustful
of their enemies. In 1745 Charles VII’s death broke the impasse in Germany. The Union of
Frankfurt, a league of Charles VII, Louis XV, Frederick II, William of Hesse and the Elector
Palatine, created in June 1744 and designed to secure Charles’s interests,
1
had not shaken
Austrian power. The French captured Freiburg, but did not co-operate with Frederick II in
overrunning Bohemia. That December, Argenson, the foreign minister, had slapped down
Chavigny’s schemes for major French commitments and emphasized the need for peace.
2
French strategy became that of forcing Austria to peace.
3
However, Bavaria was overrun by
the Austrians in April, and Maximilian Joseph, the new Elector of Bavaria, abandoned
France and allied with Austria by the Treaty of Fussen of 22 April 1745.
Determined to exclude the house of Lorraine,
4
France supported Augustus III of Saxony