Treaty of Aix-la-Chapelle (1748) in the context of "Free Imperial City of Aachen"

The Seven Years' War, 1756 to 1763, was a global war fought by numerous great powers, primarily in Europe, with significant subsidiary campaigns in North America and South Asia. The warring states were Great Britain and Prussia fighting against France and Austria, with other countries joining these coalitions: Portugal, Spain, Saxony, Sweden, and Russia. Related conflicts include the Third Silesian War, French and Indian War, Third Carnatic War, Anglo-Spanish War (1762–1763), and Spanish–Portuguese War.

Although the War of the Austrian Succession ended with the Treaty of Aix-la-Chapelle (1748), none of the signatories were happy with the terms, and it was generally viewed as a temporary armistice. It led to a strategic realignment known as the Diplomatic Revolution that ended the long-running rivalry between Austria and France. The two declared war on Britain after signing the Treaty of Versailles (1756), with a second agreement in 1757 bringing Prussia into the war.

The French and Indian War, 1754 to 1763, was a conflict in North America between Great Britain and France, along with their respective Native American allies. Historians generally consider it part of the global conflict 1756 to 1763 Seven Years' War, although in the United States it is often viewed as a distinct conflict unassociated with any larger European war.

Although Britain and France were officially at peace following the Treaty of Aix-la-Chapelle in 1748, tensions over trade continued in North America, which culminated in a dispute over the Forks of the Ohio, and the related French Fort Duquesne which controlled them. In May 1754, this led to the Battle of Jumonville Glen, when Virginia militia led by George Washington ambushed a French patrol.

The Third Silesian War (German: Dritter Schlesischer Krieg) was a war between Prussia and Austria (together with its allies) that lasted from 1756 to 1763 and confirmed Prussia's control of the region of Silesia (now in south-western Poland). The war was fought mainly in Silesia, Bohemia and Upper Saxony and formed one theatre of the Seven Years' War. It was the last of three Silesian Wars fought between Frederick the Great's Prussia and Maria Theresa's Austria in the mid-18th century, all three of which ended in Prussian control of Silesia.

This conflict can be viewed as a continuation of the First and Second Silesian Wars of the previous decade. After the Treaty of Aix-la-Chapelle ended the War of the Austrian Succession, Austria enacted broad reforms and upended its traditional diplomatic policy to prepare for renewed war with Prussia. As with the previous Silesian Wars, no particular triggering event initiated the conflict; rather, Prussia struck opportunistically to disrupt its enemies' plans. The war's cost in blood and treasure was high on both sides, and it ended inconclusively when neither of the main belligerents could sustain the conflict any longer.

Charles Emmanuel III (27 April 1701 – 20 February 1773) was Duke of Savoy, King of Sardinia and ruler of the Savoyard states from his father's abdication on 3 September 1730 until his death in 1773. He was the paternal grandfather of the last three mainline kings of Sardinia. In the War of the Polish Succession, he initially gained Lombardy but later ceded it for smaller territorial gains. During the War of the Austrian Succession, he defended Piedmont against a Franco-Spanish army, winning the Battle of Assietta. The Treaty of Aix-la-Chapelle restored lost lands and expanded his territory. He strengthened ties with Spain through marriage alliances. He chose not to get involved in the Seven Years War and instead focused on administrative reforms and maintaining a well-disciplined army.

Major-General James Wolfe (2 January 1727 – 13 September 1759) was a British Army officer known for his training reforms and, as a major general, remembered chiefly for his victory in 1759 over the French at the Battle of the Plains of Abraham in Quebec.

The son of a distinguished general, Edward Wolfe, he received his first commission at a young age and saw extensive service in Europe during the War of the Austrian Succession. His service in Flanders and in Scotland, where he took part in the suppression of the Jacobite Rebellion, brought him to the attention of his superiors. The advancement of his career was halted by the Peace Treaty of 1748 and he spent much of the next eight years on garrison duty in the Scottish Highlands. Already a brigade major at the age of 18, he was a lieutenant-colonel by 23.

King George's War (1744–1748) encompassed the military operations in North America that formed part of the War of the Austrian Succession (1740–1748). It was the third of the four French and Indian Wars. It took place primarily in the British provinces of New York, Massachusetts Bay (which included Maine as well as Massachusetts at the time), New Hampshire (which included Vermont at the time), and Nova Scotia. Its most significant action was an expedition organized by Massachusetts Governor William Shirley that besieged and ultimately captured the French fortress of Louisbourg, on Cape Breton Island in Nova Scotia, in 1745. In French, it is known as the Troisième Guerre Intercoloniale or Third Intercolonial War.

The Treaty of Aix-la-Chapelle ended the war in 1748 and restored Louisbourg to France, but failed to resolve any outstanding territorial issues.