The Battle of Cartagena de Indias (part of the War of Jenkins' Ear) begins.

The Battle of Cartagena de Indias took place during the 1739 to 1748 War of Jenkins' Ear between Spain and Great Britain. The result of long-standing commercial tensions, the war was primarily fought in the Caribbean; the British tried to capture key Spanish ports in the region, including Porto Bello and Chagres in Panama, Havana, and Cartagena de Indias in present-day Colombia.

The War of Jenkins' Ear (1739-1748) was a conflict between Great Britain and Spain. Most of the fighting took place in New Granada and the Caribbean Sea, with major operations largely ended by 1742. The conflict is considered to be related to the War of the Austrian Succession (1740-1748).

March 13 is the 72nd day of the year in the Gregorian calendar; 293 days remain until the end of the year.