April 27 in Military History

Portuguese navigator Ferdinand Magellan, leader of the first circumnavigation expedition, was killed in combat at the Battle of Mactan in the Philippines by warriors of Chief Lapu-Lapu. His death is considered one of the Age of Exploration's most significant military setbacks.

US Marines led by Lieutenant Presley O'Bannon captured the fortified port city of Derna in Ottoman Tripolitania, the first US military action on foreign soil. The action inspired the line "to the shores of Tripoli" in the Marine Corps Hymn.

American forces captured York (Toronto), capital of Upper Canada, during the War of 1812. Brigadier General Zebulon Pike was killed when a powder magazine exploded. The Americans burned Parliament buildings, which the British later cited as justification for burning Washington, D.C.

The overloaded steamboat SS Sultana exploded on the Mississippi, killing approximately 1,168 recently released Union POWs, the deadliest maritime disaster in American history. The tragedy was overshadowed by Lincoln's assassination and the Civil War's end.

The Spanish Republic's Ministry of War issued the formation order for the first Spanish armored corps, the Primer Grupo de Carros de Combate, equipped with French Renault FT-17 light tanks. Within weeks, the unit would be fighting in the Spanish Civil War.

German forces entered Athens, completing the conquest of mainland Greece in just three weeks. German soldiers raised the swastika over the Acropolis as over 50,000 Allied troops were evacuated by the Royal Navy to Crete and Egypt.

Sierra Leone achieved independence from the United Kingdom, and the Royal Sierra Leone Military Forces stood up as the successor to British Army units that had garrisoned the colony. The moment began three decades of Cold War and post-colonial military relationships.

Communist military officers launched a coup against Afghan President Daoud Khan, storming the presidential palace with tanks and airstrikes. The revolution installed a Marxist government whose brutal policies led directly to the Soviet invasion of Afghanistan in December 1979.

Beijing University students began a hunger strike in Tiananmen Square, escalating the protest movement that had started in mid-April. The hunger strike precipitated the Chinese Communist Party's declaration of martial law in Beijing on May 20.

Rwandan government radio broadcast a call for all Tutsis to be exterminated as the genocide entered its third week. The UN military mission UNAMIR had been reduced to 270 peacekeepers, unable to prevent the ongoing slaughter.

US Defense Department ordered an additional 8,500 FGM-148 Javelin anti-tank missiles for Ukraine following two months of combat use against Russian armor. The Javelin became the symbolic weapon of Ukrainian resistance to the Russian invasion.