外交革命
Humiliated by the cession of Silesia, Austria worked to secure an alliance with France and Russia (the "Diplomatic Revolution"), while Prussia drifted into Great Britain's camp forming the Anglo-Prussian Alliance. When Frederick preemptively invaded Saxony and Bohemia over the course of a few months in 1756–1757, he began a Third Silesian War and initiated the Seven Years' War.