The infantry volunteers (but not the Yeomanry or artillery) were disbanded at the Peace of Amiens in 1802, but reformed the following year when Napoleon's planned invasion became a serious threat. By the end of 1803, more than 340,000 had enrolled, far more than Henry Addington's government had planned for, and there were initially insufficient weapons and equipment for them. William Pitt, then in opposition, became the colonel of the Volunteer Corps at Walmer despite his frail health. The Volunteer Act and Provisional Cavalry Act were allowed to lapse by the government in 1806. They were disbanded again during 1813, except for the Yeomanry who were retained in case of civil insurrection.