by DR HUW J. DAVIES ‘From the Archives’ is a new regular feature on Defence-in-Depth. Archives are the lifeblood of historians. Papers, correspondence, diaries and journals constitute the primary material on which historical analysis is based. This feature is designed to fulfil two objectives. Our authors have selected an archive that has yielded an important… Read More From the Archives: The Causes of the First British Invasion of Afghanistan, 1839-42.