On the night of November 29, 1830, a group of young Polish military cadets stormed the Belweder Palace in Warsaw in a failed attempt to assassinate Grand Duke Constantine, the Tsar's viceroy, igniting a broader insurrection against Russian control of the Congress Kingdom of Poland. The uprising spread rapidly across Polish lands but was ultimately crushed by Russian forces within a year, resulting in harsh reprisals and the abolition of Polish autonomy.
The revolt began at the Officer Cadet School in Warsaw's Łazienki district, where a cell of young conspirators led by Piotr Wysocki decided to strike before Russian authorities could act on rumors of their plot. Around 6 p.m. on November 29, roughly two hundred cadets marched on the Belweder Palace hoping to kill or capture Grand Duke Constantine; he escaped in the confusion, reportedly fleeing in a nightshirt.
Word spread through Warsaw overnight, and by morning armed civilians had seized the arsenal, distributing thousands of muskets to volunteers. Within weeks a provisional government formed and the Polish Sejm formally dethroned Tsar Nicholas I as King of Poland, transforming a military mutiny into a full national war of independence.
The uprising dragged on for nearly a year, with Polish forces winning early skirmishes before superior Russian numbers turned the tide. Warsaw fell in September 1831. The aftermath was brutal: the Congress Kingdom's constitution was suspended, universities were closed, and tens of thousands of Poles were exiled to Siberia or emigrated westward, fueling a diaspora that kept the cause of Polish independence alive for generations.