On 22 May 1455, the First Battle of St Albans marked the opening military engagement of the Wars of the Roses. This violent confrontation saw the forces of the Yorkist faction, led by Richard, Duke of York, clash with the Lancastrian army loyal to King Henry VI. The battle took place within the streets of the town of St Albans, resulting in a decisive victory for the Yorkists and the capture of the King.

The conflict was rooted in a deep-seated dynastic struggle between the two rival houses, which had been destabilising English politics for some time. Tensions had been exacerbated by the King's recurring bouts of mental illness and the influence of his court favourites, leading to a breakdown in governance and order. By taking up arms, the Yorkists sought to remove these advisers from power and assert their own influence over the royal administration.

The significance of this event extends beyond the immediate tactical victory, serving as a critical turning point that transformed the political landscape of Late Medieval Britain. The battle demonstrated the fragility of the existing power structures and signalled the beginning of a prolonged period of civil unrest that would continue until the eventual rise of the Tudor dynasty. It remains a vital reference point for historians seeking to understand the complex shifts in war, government, religion and society during the fifteenth century.

• The battle served as the first major armed conflict of the Wars of the Roses.
• Richard, Duke of York, successfully defeated the Lancastrian forces.
• King Henry VI was captured by the Yorkist faction during the fighting.
• The event highlighted the severe instability within the English government.
• It set a precedent for the dynastic warfare that would define the era.