The Cavalry Staff Corps (also known as the Staff Corps of Cavalry or Staff Dragoons) was a unit formed during the Napoleonic Wars to keep discipline in the British Army. Consisting of four troops of cavalry, the corps was first raised in 1813 during the Peninsular War to deal with an excess of criminality and desertion in the Duke of Wellington's armies. It was disbanded after that campaign ended in 1814 but was reformed in 1815 during the Hundred Days campaign. The corps also served in the subsequent occupation of France. The unit was Britain's first standing military police force. A successor unit was raised for service in the Crimean War of 1853–1856 and a permanent military police was established in 1877.