Starting with less than 1,000 men at Glenfinnan in August 1745, the Jacobite army won a significant victory at Prestonpans in September. A force of about 5,500 then invaded England in November and reached as far south as Derby before successfully retreating into Scotland. Reaching a peak strength of between 9,000 to 14,000, they won another victory in January 1746 at Falkirk, before defeat at Culloden in April. While a large number of Jacobites remained in arms, lack of external and domestic support combined with overwhelming government numbers meant they dispersed, ending the rebellion.