On 21 September 1745, Charles defeated the only government army in Scotland at the Battle of Prestonpans, led by General Sir John Cope, and their disastrous defence against the Jacobites is immortalised in the song "Johnnie Cope". By November, Charles was marching south at the head of approximately 6,000 men. Having taken Carlisle, his army progressed as far as Swarkestone Bridge in Derbyshire. Here, despite Charles's objections, his council decided to return to Scotland, given the lack of English and French support and rumours that large government forces were being amassed. The Jacobites marched north once more, winning the Battle of Falkirk Muir, but they were later pursued by George II's son Prince William, Duke of Cumberland, who caught up with them at the Battle of Culloden on 16 April 1746.