1. On May 10, 1864, Union troops led by General Nathaniel Banks were defeated by Confederate forces led by General Richard Taylor in the Battle of Mansfield, also known as the Red River Campaign. The battle resulted in heavy casualties for both sides, with the Union losing nearly 2,000 soldiers and the Confederacy losing around 1,500.

2. May 10, 1894 marks the birth of Louisiana-born blues singer and guitarist, Johnnie Johnson. Johnson is best known for his work with fellow musician Chuck Berry, serving as his pianist and co-writer on many of his biggest hits, including "Johnny B. Goode" and "Roll Over Beethoven."

3. On May 10, 1977, the New Orleans Jazz and Heritage Festival kicked off its annual 10-day event, showcasing the best of Louisiana's music, food, and culture. The festival has since become one of the most popular and well-regarded music events in the country, drawing visitors from all over the world.

4. May 10, 1995, is the date of one of the worst natural disasters to hit Louisiana in recent history. A massive flood hit the state, causing widespread damage and leaving many communities underwater. In Baton Rouge alone, over 20,000 homes were damaged, and the total cost of the flood reached over $3 billion.

5. Finally, on May 10, 2010, the Louisiana Legislature passed a landmark bill that banned smoking in all bars and restaurants throughout the state. The law, which went into effect in 2012, was a significant victory for public health advocates and helped to reduce exposure to secondhand smoke for both workers and patrons in Louisiana establishments.