Siege of Berwick (1318) Siege of Berwick (1318) The Capture of Berwick was an event in the First War of Scottish Independence which took place in April 1318. Sir James Douglas, Lord of Douglas took the town and castle of Berwick-upon-Tweed from the English, who had controlled the town since 1296. Following the decisive Scots victory at the Battle of Bannockburn in 1314, the Scots had recovered all their strongholds, with the exception of Berwick. In September 1317, King Robert Bruce attempted a siege of Berwick, which lasted until November before he withdrew. The following April, an English sergeant was bribed to allow a
Robert the Bruce planned a major military campaign with the support of Lancaster and the barons, mustering a large army of between 15,000 and 20,000 men. In the spring of 1314, Edward Bruce laid siege to Stirling Castle, a key fortification in Scotland whose governor, Philip de Mowbray, agreed to capitulate if not relieved before 24 June 1314. In March, James Douglas captured Roxburgh, and Randolph captured Edinburgh Castle, while in May, Bruce again raided England and subdued the Isle of Man. News of the agreement regarding Stirling Castle reached the English king in late May, and he decided to speed his march