On this day in 1941, genius British cryptologists break the secret code used by the German army to direct military operations on the Eastern front.
On this day in 1863, Union troops land on Morris Island near Charleston, South Carolina, and prepare for a siege on Battery Wagner, a massive sand fortress on the island.
On this day in 1944, Count Claus von Stauffenberg, a German army officer, transports a bomb to Adolf Hitler’s headquarters in Berchtesgaden, in Bavaria, with the intention of assassinating the Fuhrer.
On this day in 1943, one of the greatest clashes of armor in military history takes place as the German offensive against the Russian fortification at Kursk, a Russian railway and industrial center, is stopped in a devastating battle, marking the turning point in the Eastern front in the Russians’ favor.
On this day in 1861, Union General George B. McClellan distinguishes himself by routing Confederates under General Robert Garnett at Corrick’s Ford in western Virginia. The battle ensured Yankee control of the region, secured the Union’s east-west railroad connections, and set in motion the events that would lead to the creation of West Virginia.
On this day in 1918, Quentin Roosevelt, a pilot in the United States Air Service and the fourth son of former U.S. President Theodore Roosevelt, is shot down and killed by a German Fokker plane over the Marne River in France.
On this day in 1918, near the Marne River in the Champagne region of France, the Germans begin what would be their final offensive push of World War I. Dubbed the Second Battle of the Marne, the conflict ended several days later in a major victory for the Allies.