As part of the Aviation Heritage Trail series, this book covers airfields in Lincolnshire, Norfolk, Yorkshire and Northamptonshire. 12 Group was formed in 1937 within Fighter Command to become responsible for aerial defense of the industrial Midlands. During World War Two this group was the second most important fighter group and as such, it received it's fair share of attacks from the German Luftwaffe throughout the war. As well as regional defense, 12 Group were also supposed to fly cover for 11 Group airfields during the Battle of Britain. The airfields and other places of interest include Digby, Hibaldstow, Kirton on Lindsey, Coltishall, Matlask, Swanton Morley, Catterick, Church Fenton, Clifton, Hutton Cranswick and WitteringThis book looks at the history and personalities associated with each base, what remains today and explores the favorite local wartime haunts. Museums and places that are relevant will also be described and general directions on how to get them included.