Today in history, The Seljuk Turkish army in Asia Minor is wiped out by the Mongols in 1243.
Today in history, The Lewis and Clark Expedition reaches the mouth of the Kansas River after completing a westward trek of nearly 400 river miles in 1804.
Today in history, General Robert E. Lee attacks George McClellan‘s line at Mechanicsville during the Seven Days’ campaign in 1862.
Today in history, The United States announces it will send troops to fight against the Boxer Rebellion in China in 1900.
Today in history, The Germans begin firing their huge 420 mm howitzer, “Big Bertha” (see picture below), at Paris in 1918.