December 15 in History

William J. Bauer served as a federal judge for over five decades, shaping legal precedent on the Seventh Circuit Court of Appeals in Chicago. His rulings on criminal procedure and civil rights helped define the boundaries of federal judicial authority in the Midwest throughout the late twentieth century.

Byzantine general Belisarius shattered the Vandal army at Tricamarum with a series of devastating cavalry charges, sending King Gelimer fleeing into the Numidian mountains. The victory completed Justinian's reconquest of North Africa in just five months, restoring the province to Roman control after a century of Germanic rule.

Emperor Hailing pushed his army south against Song China despite warnings. At Caishi, Song forces crushed his invasion fleet. Back in camp, his own generals watched him rage at the defeat—then decided they'd had enough. They walked into his tent and killed him where he stood. The Jin Dynasty survived. Hailing didn't. His death ended the war immediately, but it also proved something dangerous: emperors who lose badly enough can be replaced by the men holding the swords.

The Mongols burned the legendary library first. Thousands of manuscripts on astronomy, mathematics, philosophy—gone in hours. Hulagu Khan wasn't just conquering the Assassins' mountain fortress. He was erasing their intellectual legacy. The Hashshashin had ruled through fear for 166 years, their agents infiltrating courts across the Islamic world. Alamut seemed impregnable, perched 6,000 feet up in the Alborz Mountains. But the garrison surrendered after a single week of siege, their grand master already captured. Hulagu executed him anyway. Within months, every Nizari Ismaili castle in Persia fell. The sect that had terrified sultans and caliphs simply vanished from the historical stage.

Matthias Corvinus brought 40,000 men into Moldavia. Stephen III had 12,000. The Hungarian king expected a quick campaign — he got an ambush in a narrow valley near Baia instead. Stephen's archers waited in the forests above the pass. When Corvinus's heavy cavalry entered, they couldn't maneuver. Three arrows found the king himself: leg, arm, back. His bodyguards threw him on a horse and fled. Two-thirds of the Hungarian army never made it out of Moldavia. Stephen built a church for every battle he won. After Baia, he built three.

Castle Cornet in Guernsey finally surrendered after a two-year siege, ending the last royalist holdout of the Third English Civil War. This capitulation forced Charles II into permanent exile and sealed Oliver Cromwell's control over the British Isles for the next decade.

The fire gutted the U.S. Patent Office on December 15, 1836, erasing every single one of the 9,957 patents issued up to that point along with 7,000 physical models. This catastrophic loss forced Congress to immediately pass legislation creating a new system for reissuing patents and establishing stricter fire safety protocols within federal buildings.

General Ambrose Burnside pulls the Army of the Potomac back across the Rappahannock River after a disastrous assault on Fredericksburg. This crushing defeat demoralizes the Union forces and cements Confederate control over Virginia for months, compelling Washington to rethink its entire strategy against Lee's army.