Just after midnight on Christmas morning, the majority of German troops engaged in World War I cease firing their guns and artillery and commence to sing Christmas carols. At certain points along the eastern and western fronts, the soldiers of Russia, France, and Britain even heard brass bands joining the Germans in their joyous singing. At the first light of dawn, many of the German soldiers emerged from their trenches and approached the Allied lines across no-man's-land, calling out "Merry Christmas" in their enemies' native tongues. At first, the Allied soldiers feared it was a trick, but seeing the Germans unarmed they climbed out of their trenches and shook hands with the enemy soldiers. The men exchanged presents of cigarettes and plum puddings and sang carols and songs. There was even a documented case of soldiers from opposing sides playing a good-natured game of soccer. The so-called Christmas Truce of 1914 came only five months after the outbreak of war in Europe and was one of the last examples of the outdated notion of chivalry between enemies in warfare. In 1915, the bloody conflict of World War I erupted in all its technological fury, and the concept of another Christmas Truce became unthinkable.
On July 26, 1948, President Harry S. Truman signed Executive Order 9981, mandating the desegregation of the U.S. Armed Forces and ending 170 years of officially sanctioned racial discrimination in the military. Although African Americans had served since the Revolutionary War, they were typically segregated from white troops and often assigned to menial roles. A landmark achievement of both the postwar civil rights movement and Truman’s presidency, the order marked one of the first times a U.S. president used executive authority to advance civil rights. It also helped pave the way for broader desegregation efforts across American society.
On October 29, 1969, Stanford programmer Bill Duvall sent a single-word message—"login"—to UCLA student programmer Charley Kline, 350 miles away. Transmitted between two computers that each filled an entire room, this message marked the first communication between networked computers and is widely regarded as the birth of the internet.