1. In 1942, the Battle of Midway took place during World War II. This historic battle marked a turning point for the United States in the Pacific theater, and it had a significant impact on Montana as well. The state contributed many soldiers to the war effort, and residents followed news of the battle with great interest.

2. On June 4, 1877, the Battle of Powder River took place in present-day Montana. This conflict was part of the Great Sioux War of 1876-77, and it pitted the Sioux and Northern Cheyenne tribes against the United States Army. The battle ended in a stalemate, but it had important implications for the future of Native American-white relations in the region.

3. In 1985, the state of Montana suffered a devastating flood that caused millions of dollars in damage and claimed several lives. The flood was caused by unusually heavy rainfall that saturated the ground and overwhelmed local rivers and creeks. June 4 marked the peak of the flooding, and communities across the state were affected.

4. On June 4, 1919, the United States Senate gave its approval to the 19th Amendment, which would grant women the right to vote. Montana played an important role in the suffrage movement, with women in the state gaining the right to vote in 1914. The national amendment would go on to be ratified in 1920.

5. Finally, June 4 marks the anniversary of the founding of the city of Billings, Montana. In 1882, the Northern Pacific Railroad laid out plans for a new town in the area, which had previously been sparsely populated. The city quickly grew, thanks in part to the area's rich natural resources and its position as a transportation hub for the region. Today, Billings is the largest city in Montana and a vibrant community with a rich history.