The Battle of Sandwich was a naval skirmish off the town of Sandwich in January 1460 during the Wars of the Roses. In it, Sir John Denham and the Earl of Warwick, Captain of Calais, now on the Yorkist side, defeated a Lancastrian fleet and captured several of its ships. Little evidence and few details of the battle survive.
Sent ahead by Warwick, Sir John Denham found the king's fleet lying at Sandwich. Arriving at dawn, Denham launched an attack while the king's officers were still in bed. His success was so overwhelming that he "tooke the principall shippes of the Kynge's navie... well furnished with ordinaunce and artillarie".
With command of the English Channel secured by this battle, a small Yorkist army of about two thousand men landed in Kent from Calais ahead of March and Warwick. Once the town of Sandwich itself had been secured by his forces in June 1460, Warwick landed there with March and Salisbury on 26 June 1460. Having cleared the Channel of French pirates (who had been able to raid the town thanks to the chaos caused in England by the civil war) and having made the coast of Kent safe, Warwick was received in Kent as a hero.