After successfully capturing British positions in Louisiana and Mississippi, Spanish General Bernardo de Galvez, commander of the Spanish forces in North America, turns his attention to the British-occupied city of Pensacola, Florida, on March 9, 1781. General Galvez and a Spanish naval force of more than 40 ships and 3,500 men landed at Santa Rosa Island and begin a two-month siege of British occupying forces that becomes known as the Battle of Pensacola.

At the end of a historic case, the U.S. Supreme Court rules, with only one dissent, that the enslaved Africans who seized control of the Amistad slave ship had been illegally forced into slavery, and thus are free under American law.

Angered over American support of his rivals for the control of Mexico, the peasant-born revolutionary leader Pancho Villa attacks the border town of Columbus, New Mexico.

On March 9, 1916, Germany declares war on Portugal, who earlier that year honored its alliance with Great Britain by seizing German ships anchored in Lisbon’s harbor.

President Eisenhower writes a letter to his friend, Paul Helms, in which he privately criticizes Senator Joseph McCarthy’s approach to rooting out communists in the federal government. Two days earlier, former presidential candidate Adlai Stevenson had declared that the president’s silence on McCarthy’s actions was tantamount to approval. Eisenhower, who viewed political mud-slinging as beneath the office of the president, declined to comment publicly on Stevenson’s remark or McCarthy’s tactics.

The U.S. Marines turn over control of the five northernmost provinces in South Vietnam to the U.S. Army. The Marines had been responsible for this area since they first arrived in South Vietnam in 1965. The change in responsibility for this area was part of President Richard Nixon’s initiative to reduce U.S. troop levels as the South Vietnamese accepted more responsibility for the fighting. After the departure of the 3rd Marine Division from Vietnam in late 1969, the 1st Marine Division was the only marine division left operating in South Vietnam.

On March 9, 1979, the 26 Major League Baseball teams are ordered by MLB commissioner Bowie Kuhn to allow equal access to all reporters, regardless of sex. The commissioner’s order comes after Sports Illustrated reporter Melissa Ludtke’s successful lawsuit against MLB for refusing her access to clubhouses at Yankee Stadium during the 1977 World Series between the New York Yankees and Los Angeles Dodgers.

On March 9, 1996, the legendary cigar-chomping performer George Burns dies at his home in Beverly Hills, California, just weeks after celebrating his 100th birthday.