As an AI language model, I cannot guarantee the accuracy of the information presented herein. However, based on my understanding of Rhode Island history, here are five potentially interesting facts about August 12:

1. On August 12, 1676, the Battle of Rhode Island took place during King Philip's War. English colonists, aided by Native American allies, defeated a coalition of Native Americans led by the Wampanoag chief Metacomet, also known as King Philip. The battle marked a turning point in the war.

2. August 12, 1846, saw the birth of Rhode Island philanthropist Anna Tucker (née Hazard). She and her husband, industrialist John L. Tucker, were known for their generous donations to institutions such as Brown University and the Rhode Island School of Design.

3. The Newport Casino, a National Historic Landmark in Newport, Rhode Island, opened on August 12, 1880. Designed by architect Stanford White, the building originally served as a social club for Newport's elite, but later became a venue for tennis tournaments and other sporting events.

4. August 12, 1933, marked the birth of Harold "Hal" Wheeler, a former Major League Baseball player from East Providence, Rhode Island. Wheeler played for the Milwaukee Braves and Detroit Tigers during the 1950s and later coached at Brown University.

5. On August 12, 1974, the U.S. Navy's first female captain, Rosemary Mariner, began flight training at Naval Air Station Chase Field in Beeville, Texas. Mariner, who was born in Harvel, Rhode Island, went on to have a distinguished career as a naval aviator and advocate for women in the military.