The history of British light infantry goes back to the early days of the British Army, when irregular troops and mercenaries added skills in light infantry fighting. From the beginning of the nineteenth century, the Army dedicated some line regiments as specific light infantry troops, were trained under the Shorncliffe System devised by Sir John Moore and Sir Kenneth MacKenzie Douglas. The light infantry had the nickname "light bobs" first used during the American Wars of Independence, and commonly applied to the Light Division during the Napoleonic wars.