The Battle of Bosworth Field or Battle of Bosworth was the last major battle of the Wars of the Roses. It was fought on August 22 , 1485 between the King Richard III , the last of the House of York, and the Lancastrian contender for the crown, Henry Tudor, 2nd Earl of Richmond (later King Henry VII).

Iin the battle Richard III was defeated and killed and this led to the establishment of the Tudor dynasty .

Henry had landed in Pembrokeshire on August 7 with a small force in his attempt overthrow Richard III. . He was accompanied by his uncle, Jasper Tudor, 1st Earl of Pembroke (later 1st Duke of Bedford) and John de Vere, 13th Earl of Oxford , both of whom were brilliant and seasoned soldiers which more than made up for Henry's lack of experience in the field. Henry gathered supporters in the course of his journey through Wales. By the time he arrived in the Midlands, he had gathered round him an army estimated at 5,000 men.

Richard III, however, could command nearly 8,000 troops. The decisive factor in the battle was to be the conduct of Henry Percy, 4th Earl of Northumberland (one of Richard's commanders) and the Stanley family - brothers Sir William Stanley and Thomas Stanley, 2nd Baron Stanley. The Stanleys are said to have taken up a position away from the armies of Henry and Richard and along with Northumberland watched the Battle progress. At first the Battle went well for Richard but when his commander, the Duke of Norfolk, was killed Richard tried to win the conflict by a surprise charge at Tudor, before the waiting armies of the Stanleys and Northumberland chose sides.  Richard led his household bodyguard against Henry.  Richard managed to kill Henry's standard bearer, William Brandon, and Sir John Cheyney.  When Richard was only a few feet away from Tudor, Lord Stanley's army moved, first surrounding and then killing Richard.