Setting the scene
By 1485, the Wars of the Roses had devastated the English nobility. Richard III, who had usurped the throne from his nephew Edward V in 1483, faced a challenge from Henry Tudor, Earl of Richmond, a Lancastrian claimant living in exile in France. Henry landed at Milford Haven in Wales on August 7, 1485, with 2,000 French mercenaries and gathered Welsh and English supporters as he marched east. Richard, based at Nottingham, mobilized his forces, including the powerful Stanley family, whose loyalty was doubtful.
What happened
The armies met near Market Bosworth in Leicestershire on August 22. Richard had 10,000-15,000 men, Henry about 5,000-8,000. The Stanleys—Thomas, Lord Stanley, and his brother William—positioned their 6,000 men on a hill, refusing to commit to either side. Richard's vanguard under the Duke of Norfolk attacked but was repulsed. Seeing Henry exposed, Richard led a desperate cavalry charge directly at him, nearly killing Henry and unhorsing his standard-bearer. At that moment, William Stanley intervened for Henry, surrounding and killing Richard.
Why it still matters
Richard III was the last English king to die in battle—his body was stripped, slung over a horse, and buried hastily in Leicester (rediscovered in 2012). Henry was crowned Henry VII on the battlefield with Richard's circlet. Bosworth ended the Plantagenet dynasty (which had ruled since 1154) and began the Tudor era. Henry's victory was less military brilliance than political calculation—the Stanleys' betrayal decided it. He married Elizabeth of York, uniting Lancaster and York, and established a dynasty that would transform England. Shakespeare later immortalized Richard as a villain, though modern historians debate his reputation.【5842622571419933471†L5-L7】
Background
The Tudor dynasty began on the English throne. Even centuries later, this episode remains a reference point for how empires rise, fracture, and transform.