March 19 in Military History — On This Day

The Conquest of Song China (Battle of Yamen)

Kublai Khan's decades-long war to conquer the Southern Song dynasty ended in a great naval battle at Yamen, off the coast of Guangdong. The Mongol-Yuan fleet trapped and destroyed the Song fleet; with defeat certain, a loyal official leapt into the sea with the boy-emperor of Song in his arms, and tens of thousands of officials and soldiers reportedly drowned themselves rather than surrender.

Yamen extinguished the Song dynasty and completed the Mongol conquest of all China — the first time the entire country had been ruled by a foreign people. Kublai's Yuan dynasty now governed the most populous and wealthy land on earth, anchoring an empire that stretched across Eurasia, even as the once-unified Mongol realm fractured into rival khanates.

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⚔️📍 Yamen, South China1279

Battle of Yamen — Fall of the Song Dynasty

The Mongol Yuan fleet destroyed the last Song Chinese fleet in a decisive naval battle, ending the Song Dynasty. A loyalist official jumped into the sea with the 8-year-old Emperor Bing to avoid capture; up to 100,000 Song followers drowned or died in the battle.

The fall of the Song Dynasty completed the Mongol conquest of China, making the Yuan the first foreign dynasty to rule all of China and reshaping Asian history for a century.

Outcome

Mongol Yuan victory; Song Dynasty ends

Casualties

100,000

Fall of Nanjing

After sweeping northward through Hunan and Hubei provinces and capturing Wuhan in January 1853, the Taiping Heavenly Army descended the Yangtze River in an enormous armada of captured boats, carrying hundreds of thousands of soldiers and civilians. Nanjing — the former Ming Dynasty capital and China's second city — fell after a siege of just eleven days. The Taiping captured the city by tunneling under the city walls and detonating mines that blew breaches in the fortifications. Approximately 30,000 Manchu garrison troops and their families were slaughtered in the aftermath — the Taiping made no distinction between soldiers and Manchu civilians, whom their ideology condemned as alien occupiers to be exterminated.

The fall of Nanjing transformed the Taiping Rebellion from a regional insurgency into an existential threat to the Qing Dynasty. Nanjing — renamed Tianjing ('Heavenly Capital') — became the Taiping capital and remained under Taiping control for eleven years. The city's fall sent shock waves through the Chinese empire: Qing forces had been unable to stop the Taiping advance across half of China in two years. The mass killing of Manchu civilians established the racial and religious brutality that would characterize the conflict, in which both sides regarded the other's civilian population as legitimate targets in a war of extermination.

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NATO Intervention Begins

With Gaddafi's forces advancing on Benghazi and the dictator threatening to hunt rebels 'house by house,' the UN Security Council passed Resolution 1973 authorizing a no-fly zone and the protection of civilians. French Rafale jets struck the first blow, attacking a Gaddafi armored convoy south of Benghazi. NATO rapidly assumed command of the operation, and Western airpower fundamentally changed the military balance, neutralizing Gaddafi's armor, air force, and command infrastructure over the following months.

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