November 9 in Military History

Napoleon Bonaparte overthrew the unstable French Directory in a coup d'état, replacing it with the French Consulate and installing himself as First Consul. The coup effectively ended the French Revolution's decade of republican government. Within five years, Napoleon would crown himself Emperor and launch wars that reshaped the entire European continent.

Major General Ambrose Burnside reluctantly accepted command of the Army of the Potomac after Lincoln relieved McClellan. Burnside had twice previously declined the position, partly because he feared the alternative was giving the job to Joseph Hooker. His self-doubt proved prophetic: within six weeks he led the army to catastrophe at Fredericksburg.

A fire that began in the basement of a dry goods warehouse destroyed 65 acres of downtown Boston, damaged or destroyed over 700 buildings, and killed at least 30 people including four firefighters. The disaster prompted reforms in US military firefighting doctrine and urban fire protection that influenced base fire departments for decades.

President Theodore Roosevelt traveled to Panama to inspect construction of the canal, the first time a sitting US president left the country while in office. The canal transformed US naval strategy by allowing rapid fleet movement between Atlantic and Pacific, halving transit times and reshaping global sea power.

The Australian light cruiser HMAS Sydney intercepted and destroyed the German commerce raider SMS Emden at the Cocos Islands in the Indian Ocean. The Emden had been the most successful German raider of the war, capturing or sinking 25 Allied merchant vessels and bombarding Madras, India. The battle earned Australia's navy its first major battle honor.

With revolution sweeping Germany and the army disintegrating, Chancellor Max von Baden announced the abdication of Kaiser Wilhelm II, without the Kaiser's authorization. The Weimar Republic was proclaimed that afternoon. Wilhelm fled to the Netherlands, ending 300 years of Hohenzollern rule and removing the final obstacle to the armistice signed two days later.

Adolf Hitler's attempt to seize power in Bavaria collapsed when Munich police opened fire on a column of Nazi marchers, killing 16. Hitler was arrested, imprisoned, and used his trial to build a national reputation. The failed putsch reshaped how the Nazi movement approached seizing military and state power.

A power system failure plunged most of the US Northeast and parts of Canada into darkness for 13 hours, affecting over 30 million people. The blackout exposed vulnerabilities in national infrastructure that shaped later Department of Defense work on continuity of government and critical-infrastructure protection.

Screens at NORAD and the Strategic Air Command displayed a massive Soviet nuclear attack, hundreds of incoming ICBMs. Fighter interceptors scrambled and the National Emergency Airborne Command Post launched before the alert was confirmed as false. A training tape simulating a Soviet first strike had been accidentally loaded into the live warning system.

East German border guards opened the gates after a bungled press conference, and thousands of Berliners swarmed through the wall that had divided the city for 28 years. The event triggered German reunification and the end of the Cold War.