1740-48 war between Austria (supported by England and Holland) and Prussia (supported by France and Spain) 1740 The Holy Roman emperor Charles VI died and the succession of his daughter Maria Theresa was disputed by a number of European powers. Frederick the Great of Prussia seized Silesia from Austria. 1743 At Dettingen an army of British, Austrians, and Hanoverians under the command of George II was victorious over the French. 1745 An Austro-English army was defeated at Fontenoy but British naval superiority was confirmed, and so there were gains in the Americas and India. 1748 The war was ended by the Treaty of Aix-la-Chapelle. Subject by: Russell Webb