The Peace of Amiens was short-lived, and the Staffordshire Militia was embodied again on 30 March 1803. A new 2nd Regiment was raised on 28 June. The 1st Regiment was ready for duty by 17 May and was immediately ordered to Windsor, where the King rode at its head when it marched into Windsor Barracks. It accompanied him to Weymouth in the summer of 1804, returning with him to Windsor in the autumn. In 1805 George III commanded that the regiment should become the King's Own Staffordshire Militia, and it was augmented by 200 men from the 2nd Regiment, which was disbanded. The regiment was on service at Windsor, St James's Palace and Kew Palace almost continuously until it was disembodied in 1814 at the end of the Napoleonic War. When Napoleon escaped from Elba in 1815, the regiment was re-embodied while the regular army was serving in the Waterloo campaign. It was finally disembodied in April 1816.