While the peace between the War of the Austrian Succession and the Seven Years' War lasted, Howe held commands at home and on the west coast of Africa.
Louis Francois De Bourbon, prince de Conti (1717-1776), only son of the preceding, adopted a military career, and when the war of the Austrian Succession broke out in 1741 accompanied Charles Louis, duc de Belle-Isle, to Bohemia.
During the 18th century the War of the Austrian Succession and the Seven Years' War dealt heavy blows at the prosperity of the landgraviate, which was always loyal to the house of Austria.
It suffered severely during the Hussite war, during the Swedish invasion in 1631 and 1647, and in the War of the Austrian Succession in 1742.
When the War of the Austrian Succession approached, his sympathies were entirely with Maria Theresa - mainly on the ground that the fall of the house of Austria would dangerously increase the power of France, even if she gained no accession of territory.
In 1744, when the war of the Austrian Succession broke out, the New England colonies planned and in 1745 effected the capture of Louisbourg, the stronghold of France in Cape Breton Island, which menaced their commerce.