Settled by successive waves of incomers, Northamptonshire is a typical English shire county with prehistoric camps, Roman towns, Saxon burhs, castles and fortified houses, representing fortification over the centuries, a process punctuated by momentous events including the birth of Richard III and the execution of Mary, Queen of Scots, both at Fotheringhay Castle; King John's sieges at Northampton, Rockingham and Fotheringhay; the Battle of Northampton placing Edward IV on the throne; and the decisive defeat of Charles I at Naseby. The great ordnance depot at Weedon was (allegedly) chosen as a bolt-hole for George III in the place furthest from Napoleon's likely invasion. The Victorian period saw the army reorganized and the Volunteer Force develop. Both world wars mobilized the population and the county filled up with army camps, airfields and munitions plants. In the Cold War, nuclear missiles were pointed towards Russia. Many signs of all these events are still visible: Northampton's militia armoury in the guise of a mediaeval castle; the genuine castles of Barnwell and Rockingham: the launch-pads of Harrington's THOR missiles; the Ordnance Stores at Weedon Bec; and the banks and ditches of Hunsbury Camp or Little Houghton. This book illustrates and explains these sites.