The iconic design of the legendary British fighter underwent steady upgrades and development before and during WWII, as evidenced by the numerous Marks of Spitfire that were produced. This volume focuses exclusively on the land-based Spitfires that accommodated the Rolls-Royce Merlin engine as their power source, including the Marks I, Vb, and IXc. Displayed in extensive detail are the external and internal workings of the aircraft that played a key role Britain’s defense.