This study aims to bridge a gap in the literature on revolutions in military affairs, suggesting that there have been two very different phenomena at work over the past centuries - military revolutions and revolutions in military affairs.

Thinking about revolutions in warfare /Williamson Murray and MacGregor Knox -- "As if a new sun had arisen": England's fourteenth-century RMA / Clifford J. Rogers -- Forging the Western army in seventeenth-century France / John A. Lynn -- Mass politics and nationalism as military revolution: the French Revolution and after / MacGregor Knox -- Surviving military revolution: the U.S. Civil War / Mark Grimsley -- The Prusso-German RMA, 1840-1871 / Dennis E. Showalter -- The battlefleet revolution, 1885-1914 / Holger H. Herwig -- The First World War and the birth of modern warfare / Jonathan B.A. Bailey -- May 1940: contingency and fragility of the German RMA / Williamson Murray -- Conclusion: the future behind us / Williamson Murray and MacGregor Knox.