250 years on, the United States is celebrating a milestone – but Spain’s crucial contribution is still largely overlooked

On 4 July 2026, the United States marks the 250th anniversary of its Declaration of Independence. Across the country, celebrations will honour the Founding Fathers, George Washington and the birth of a new nation.

Yet one important chapter of that story is often forgotten: Spain played a decisive role in helping the American colonies achieve independence from Britain.

Spain Expat Press Editorial Team

Spain supported the revolution long before openly entering the war

When the thirteen American colonies declared independence in 1776, they faced enormous challenges. The rebels lacked money, weapons, ammunition and vital supplies.

Although Spain did not initially form a formal alliance with the revolutionaries, King Charles III recognised an opportunity to weaken Britain’s global power and began supporting the American cause behind the scenes.

Weapons, money and supplies flowed from Spanish territories

Through Spanish-controlled territories such as Havana, New Orleans and Louisiana, thousands of muskets, uniforms, blankets, medicines and large quantities of gunpowder reached the American rebels.

The supply route along the Mississippi River became particularly important at a time when British naval forces controlled much of the Atlantic coast. Historians widely acknowledge that these Spanish supply lines were essential to sustaining the revolutionary effort.

Bernardo de Gálvez: the Spaniard who helped change history

Perhaps the most important Spanish figure in the American War of Independence was Bernardo de Gálvez, a military commander born in Macharaviaya, near Málaga.
As Governor of Spanish Louisiana, Gálvez not only organised supplies for the rebels but also led military campaigns against British forces in the Gulf of Mexico and along the Gulf Coast.

His victories at Baton Rouge, Mobile and, most significantly, Pensacola in 1781 severely weakened British military positions in North America.

Opening a second front against Britain

Spain’s intervention forced Britain to fight on several fronts simultaneously. In addition to battling the American revolutionaries and later the French, Britain also had to commit troops and resources to defending its interests in Florida, the Caribbean and the Gulf of Mexico against Spanish forces.

This additional pressure stretched British military capabilities and contributed significantly to the eventual American victory.

Would the United States have won without Spain?

Many historians argue that American independence would have been considerably more difficult – and perhaps delayed for years – without Spanish financial, logistical and military support.

Despite this, Spain’s contribution has often been overshadowed by France’s more widely recognised involvement.

Long-overdue recognition

Recognition of Bernardo de Gálvez’s contribution came only centuries later. In 2014, the United States Congress granted him honorary US citizenship, an honour bestowed on only a handful of foreign figures throughout American history.

Today, his portrait hangs in the US Capitol, serving as a reminder of Spain’s largely forgotten role in the birth of the United States.

A shared history worth remembering

As America celebrates its 250th anniversary, historians say it is also an opportunity to acknowledge the international dimension of the struggle for independence.

The story of the United States is not solely one of American and French heroism. Spain, too, played a crucial part in shaping the nation that emerged in 1776.