During 1830s Russian and Persian armies threatened an advance towards the north-western frontier of the British-Indian Empire. The British responded in April 1839 by invading Afghanistan with the ‘Army of the Indus’. Despite initial successes, a growing Afghan insurgency resulted in the devastating destruction of the Kabul Garrison in January 1842. For most commentators this cataclysmic event marked the end of an ill-conceived, poorly executed and inept British intervention into Afghanistan. The First Anglo-Afghan War has been persistently characterised as both a political and military failure ever since.This thesis provides a reassessment of the First Anglo-Afghan War and concludes that it was not the strategic disaster as popularly percei...