1. On July 21, 1861, Wisconsin troops played a key role in the First Battle of Bull Run during the American Civil War. The 2nd Wisconsin Infantry Regiment, led by Colonel Socrates W. Patrick, held off a Confederate charge for nearly an hour before finally being forced to retreat.

2. Wisconsin became the first state to ratify the 19th Amendment to the United States Constitution on July 21, 1919. This amendment granted women the right to vote, and Wisconsin's speedy ratification helped to secure its passage.

3. On July 21, 1897, the Green Bay Packers football team was founded. Originally a local club made up of mostly high school students, the Packers went on to become one of the most successful and beloved teams in the National Football League.

4. In 1832, the Winnebago War erupted in Wisconsin, pitting the US Army against the Ho-Chunk people. On July 21 of that year, a group of Ho-Chunk warriors ambushed and killed a group of soldiers in what became known as the Battle of Wisconsin Heights.

5. Wisconsin native Bob Uecker, a former baseball player, actor, and broadcaster, was inducted into the Baseball Hall of Fame on July 21, 2003. Known for his quick wit and colorful commentary, Uecker has been a beloved figure in both the sports and entertainment worlds for decades.