The alliance allowed Britain to concentrate most of its efforts against the colonial possessions of the French-led coalition while Prussia bore the brunt of the fighting in Europe.

After the War of the Austrian Succession, Austria had lost the valuable province of Silesia, and Empress Maria Theresa tried to gain British support for a proposed military action to reclaim it.

The terms stated that Prussia and Great Britain would seek to prevent any foreign power's forces from passing through the Holy Roman Empire and was part of the Diplomatic Revolution.

Britain had enjoyed an annus mirabilis in 1759 by defeating France in Europe, North America and Asia and by repelling a planned French invasion.

Britain won a number of key victories over Spain in 1762, and the Russian Empress died, which made Russia withdraw from the war against Prussia.

The alliance was eventually dissolved in 1762, when Britain withdrew financial and military support for Prussian war aims in Continental Europe.

[2] Britain won more favourable terms the next year at the Treaty of Paris by gaining a number of the colonial possessions that it had captured from France and Spain.