The War of Jenkins' Ear commenced around 1739, marking a significant escalation in the long-standing tensions between Britain and Spain. The conflict was rooted in persistent disputes regarding trade, the suppression of smuggling, and contested maritime rights within the Caribbean. These frictions were exacerbated by the aggressive enforcement of Spanish colonial regulations, which frequently led to the boarding and searching of British merchant vessels.

The hostilities were named after an incident involving the master mariner Robert Jenkins, who claimed that Spanish coastguards had severed his ear during a search of his ship in 1731. When this account was brought before the British Parliament years later, it served as a potent catalyst for public outrage and political pressure, ultimately pushing the government toward a declaration of war. This conflict underscored the escalating importance of imperial expansion and the projection of naval power as central themes in eighteenth-century international relations.

The war highlighted several critical factors defining the geopolitical landscape of the era:

• The intense competition for dominance over lucrative trade routes in the Americas.
• The ongoing struggle to maintain and protect British commercial interests against Spanish colonial restrictions.
• The role of maritime incidents in mobilising public opinion and influencing government foreign policy.
• The growing reliance on naval supremacy as a primary instrument of British statecraft.
• The broader shift towards global conflict as European powers vied for control of overseas territories.

Beyond the immediate grievances, the conflict reflected the wider instability characterising the Georgian period, where the pursuit of empire frequently brought major powers into direct confrontation. The war served as a precursor to more extensive military engagements, illustrating how localised maritime disputes could rapidly evolve into large-scale warfare, fundamentally shaping the strategic priorities of the British state throughout the remainder of the century.