1. In 1862, the Battle of Shiloh began in southwestern Tennessee during the Civil War. Many soldiers from Washington fought in the battle, which resulted in a Union victory.

2. On April 6, 1917, the United States entered World War I. President Woodrow Wilson declared war on Germany, shifting the course of U.S. history and setting off a chain of events that would ultimately lead to the end of the war.

3. In 1967, six people were arrested in Washington, D.C. at a protest against the Vietnam War. The protest, which was one of the largest anti-war demonstrations in history, drew over 100,000 people to the nation's capital.

4. On April 6, 1984, the Washington Bullets (now the Wizards) NBA team set a record for the most blocked shots in a season with 758. The previous record of 750 had been set by the Houston Rockets in the 1980-81 season.

5. In 2013, Washington Nationals outfielder Bryce Harper hit his first home run of the season on April 6 against the Cincinnati Reds. The home run was significant for Harper, who had been struggling at the plate during the early part of the season.