As History.com notes, on this day in 1455 the opening battle of the War of the Roses occurred.
In the opening battle of England’s War of the Roses, the Yorkists defeat King Henry VI’s Lancastrian forces at St. Albans, 20 miles northwest of London. Many Lancastrian nobles perished, including Edmund Beaufort, the duke of Somerset, and the king was forced to submit to the rule of his cousin, Richard of York. The dynastic struggle between the House of York, whose badge was a white rose, and the House of Lancaster, later associated with a red rose, would stretch on for 30 years.
You can read the rest of the piece via the below link: